ups er diagramups er diagram

There are logical maximums for the number of UPS modules that can be paralleled onto a common bus, and this limit is different for different UPS manufacturers. In other words, the Fee attribute values are not specific to the SID value of a student, but rather the BuildingName value. This paper outlines the application of normalization principles to ERD development during the conceptual modeling phase. In more technical terms it can be defined as an entity that cannot be identified by its own attributes. This phase may also enhance or refine the data model (ERD) of the previous phase to ensure efficient utilization of the database. An Entity Relationship Diagram is made up of many different components: An entity is a thing that can have data stored about it. Information Systems, Computers & Industrial Engineering, Information and Software Technology, Knowledge-Based Systems, and Integrated Manufacturing Systems. An ERD developed during the conceptual data modeling phase of the database development process is generally transformed and enhanced through normalization principles during the logical database design phase. What are the uses of ER diagrams? For example, for a circle, the area can be derived from the radius. Upon any event where the primary module(s) load is transferred to static bypass, the isolation module would accept the full load of the primary module instantaneously. To resolve the violation of the fourth normal form separate weak entity types with identifying relationships are created as shown in Figure 14. Product Management tools + Software Architecture tools. A functional dependency in which the determinant contains more than one attribute usually represents a many-to-many relationship, which is more addressed through higher normal forms. An Entity Relationship Diagram (ERD) is a type of diagram that lets you see how different entities (e.g. We now describe each of these. During requirement analysis, some entity types may be identified through functional dependencies, while others may be determined through database relationships. IT and Cloud architecture tools for all platforms. The ER diagram software offered by Creately as an online service is pretty easy to use and is a lot more affordable than purchasing licensed software. Application of normalization during ERD development allows for more robust requirement analysis. Name, Street, City, Zip. Relationships are represented by diamond shapes and are labeled using verbs. The small UPS under an office desk is an N configuration. This type of system is by far the most common of the configurations in the UPS industry. Relationships between entities: Defines how the entities are associated or related with each other. A supplier supplies many parts. They are weak entity, multi valued attribute, derived attribute, weakrelationship, and recursive relationship. For example, the attribute Inventory Item Name is an attribute of the entity Inventory Item. There are more elements which are based on the main elements. EdrawMax is an advanced all-in-one diagramming tool for creating professional flowcharts, org charts, mind maps, network diagrams, UML diagrams, floor plans, electrical diagrams, science illustrations, and more. It is applicable for industrial applications because it is manufactured with high capacity, 125 kVA or . An ER diagram is used to visualize the relationships between entities in a database. The entity instance of Student Details entity type is shown Figure 7. The relationship cardinalities can be further modified to reflect organizational working. You can draw entity relationship diagrams manually, especially when you are just informally showing simple systems to your peers. The Boyce-Codd normal form (BCNF) extends the third normal form. An Entity Relationship (ER) Diagram is a type of flowchart that illustrates how entities such as people, objects or concepts relate to each other within a system. Figure 29 Typical 1+N System Block Diagram with Common Input Supply, with Separate Batteries. There are several different types of attributes represented on an ERD: An attribute can also be single-value or multi-value: Cardinality represents the number of instances of an entity that exist in a relationship between two entities. What tool should you use to create a data model or an Entity Relationship Diagram? What is a UPS (Uninterruptible Power Supply)? draw.io can import .vsdx, Gliffy and Lucidchart files . A composite entity identifier is an entity identifier with more than one attribute. If an attribute can have more than one value it is called a multi valued attribute It is important to note that this is different from an attribute having its own attributes. Add historical details to a data model. Application of For example, consider the Student Details entity type shown in Figure 6. draw.io is free online diagram software. Cloud Computing Diagrams What is Entity-Relationship Diagram Entity Relationship Diagram (ERD) is an acknowledged method to visualize the logical structure of databases. Name, Street, City, Zip. For a detailed history of ER diagrams and the evaluation of data modeling,refer this article. Transactions on Database Systems, 1 (1), 9-36. Historical details may be necessary for legal as well as strategic reporting requirements. Think of entities as nouns. Create an Entity Relationship diagram that captures the information about the UPS system? But in the past, Ive used Visio and even the data modelling capabilities inside an IDE. To ensure that StudentConcentration entity type stays in Boyce-Codd normal form, another entity type Faculty with one-to-many relationship is constructed as shown in Figure 13. Be certain to indicate identifiers and cardin ality constraints. Sounds simple right? HVn6} /daJ . Clench your butt, brace your abs, and set your hands on the wall at slightly wider than shoulder-width apart. Tetap semangat ya. If the same entity participates more than once in a relationship it is known as a recursive relationship. Each of these levels has a different level of detail and are used for a different purpose. Peter Pin-Shan Chen), currently a faculty member at Carnegie-Mellon University in Pittsburgh, is credited with developing ER modeling for database design in the 1970s. When one of the modules is removed from the parallel bus for service (or if it were to remove itself due to an internal failure), the remaining UPS modules are required to immediately accept the load of the failed UPS module. Connect with us for help choosing the right product or with troubleshooting and installation. These guidelines can be stated as follows: Study of dependencies among attributes during requirement analysis assist in entity type identifications and cardinality specifications. Stephen Covey, Educator and Author, 1997 2023 The Data Administration Newsletter, LLC. Brown were working with close predecessors of Chens approach. 0000001997 00000 n To do this, UPS relies on a company-wide information system. There may be different valid approaches to an ER diagram. Some of the benefits of a Context Diagram are: The figure below shows a context Data Flow Diagram that is drawn for a Food Ordering System. Many employees assemble an, inventory item from many parts. UPS prides itself on having up-to-date information on the processing and current location of each shipped item. The EER model is an integral part of UML as all constructs of EER schemas are included, except for weak entity types, to represent the static part of object modeling. 0000002638 00000 n As time passed, the structure of the schematic diagrams modified, and somewhere in the 20th century, leaving behind the traditional approach, a modern illustration . But now you have explained clearly as I understand very much. Make sure, to capture the constraints on the relationships involved, and designate appropriate. Notify me of follow-up comments by email. 0000001773 00000 n The following diagram is a simple version of rotary UPS topology. One to many: One record of an entity is related to one or more records of another entity. Heres an example ERD using Bachman notation: Heres an example of the symbols used with the IDEF1X notation style. Generally a preliminary data model is constructed which is then refined many times. When we are creating an ERD we often have an idea of what we want to capture. Hi, may I congratulate you on a job very well done. Abstract Entity relationship diagram (ERD) is one of the most widely used technique for data modeling. Boyce-Codd normal form considers two special cases not covered by third normal form: These situations are only possible if there is a composite entity identifier, and dependencies exist from a non-entity identifier attribute to part of the entity identifier. This is often expressed as a number but could also be a symbol, depending on the style of diagram used. Thinking of tables is too detailed for this type of data model. 0000001397 00000 n This means that a SID value is associated with multiple values of MajorMinor and Activity attributes, and together they determine other attributes. For example, an inventory software used in a retail shop will have a database that monitors elements such as purchases, item, item type, item source and item price. Show the level of detail necessary for your purpose. For example, Suppose we design a school database. Although UPS configurations found in the market today are many and varied, there are five that are most commonly applied. The second normal form deals with the situation when the entity identifier contains two or more attributes, and the non-key attribute depends on part of the entity identifier. Heres an example of the student and course physical data model. 0000005166 00000 n Relationships are typically shown as diamonds or labels directly on the connecting lines. Cardinality constraints: The minimum or maximum numbers that apply to a relationship. Overall, distributed redundant systems are usually chosen for large multi-megawatt installations where concurrent maintenance is a requirement and space is limited. You can also start with a pen and paper to get an understanding of how a diagram can be created. A one-to-many example (or many-to-one, depending on the relationship direction): One student registers for multiple courses, but all those courses have a single line back to that one student. Weve also added some templates for you to get started quickly. The ER diagram/relational database schema contains several instances of data redundancy. From the utility service entrance to the UPS, a distributed redundant design and a system plus system design (discussed in the next section) are quite similar. They are represented in a few different ways: This can help you translate a description of what you need to diagram into an actual diagram. A Capacity or "N" system, is . Retail centers are characterized by their type, uniqueID, and address. Every table in Boyce-Codd normal form is by definition in third normal form. 0000001243 00000 n Also known as ERDs or ER Models, they use a defined set of symbols such as rectangles, diamonds, ovals and connecting lines to depict the interconnectedness of entities, relationships and their attributes. There is a range of modelling notations or types of symbols which define how entities, attributes, and relationships are captured. UPS is a powerful technique to exam molecular . This table outlines the differences between a conceptual, logical, and physical model: So how do you create a data model or an Entity Relationship Diagram? Well see some examples of cardinality later in this guide. Single-value: Just one attribute value. To do this, UPS relies on a company-wide information system. Enterprise-grade online collaboration & work management. PART 1: What Type of UML Diagram Should You Be Using? Journal of Database Management, 10(4),14-23. The block diagram of Line Interactive UPS is shown below, it is the most common UPS used for small business. A salesperson is managed by only, one salespeople. Very well explained, as I was struggling of what is a ERD, how do I design it. Data modeling is an essential component of database design and development. Features of ER model i) E-R diagrams are used to represent E-R model in a database, which makes them easy to be converted into relations (tables). 0000045758 00000 n In this configuration, there is a main or primary UPS module that normally feeds the load. Learn all about Entity Relationship Diagrams (ERDs), what they are used for, how to understand them, how to create them, and more in this guide. Due to the similarity in the notion of an entity type and a relation, normalization concepts when explained or applied to an ERD may generate a richer model. A related term is instance, in which the specific person or car would be an instance of the entity set. In the last few years, the Unified Modeling Language (UML) emerged and became the defacto industry standard for many aspects of object modeling (Bock & Ryan, 1993; Booch, 1994; Fowler, 1997; Booch, Rumbaugh & Jacobson, 1999). The client must purchase one or more menu items, while each menu item is served by one attendant. Key features: Generate ER diagrams by writing codes Save diagrams as Images and PDFs Upload database schema from Web frameworks QuickDBD (Web, Windows, Mac, Linux) UPS uninterruptible power supply is a device used for protection against over voltage, under voltage; provide continuous supply in case of supply outage, protection against voltage spikes, frequency fluctuation and against distortion in voltage wave form. Your comparative diagram notation are clear, you dont use too much jargon. Creately supports Chen, UML and Crows foot notations.The following example uses UML to show cardinality. Thanks, it really helps. Liautaud, B. and Hammond, M (2001) e-Business Intelligence, McGraw-Hill, NJ. Below are some ER diagram templates so you can get started quickly. We'll progress from Level 1 Push-ups to Level 4 Push-ups: Wall Push-Ups: Level 1; Elevated Push-Ups: Level 2; Knee Push-ups: Level 3; Regular Push-ups: Level 4; LEVEL 1: HOW TO DO WALL PUSH-UPS. This shows how an ER Diagram compares to a grammar diagram: The database query language ERROL actually mimics natural language constructs. Multi-Value: an attribute that can be captured more than once for an entity, such as multiple phone numbers. If you have a large diagram, consider using colours to highlight different sections, or breaking it up into smaller diagrams. For example, the statement, A faculty teaches many offerings but an offering is taught by one faculty defines entity type Faculty and Offerings. 9, No.1, pp. Go back to our top White Papers Entity Relationship Diagram Exercise with Answers tutorial scd1523 entity relationship diagram problem pet store has requested you to design database to store. Verb: an action, such as enrol or send. Attributes are added to each entity, and further entities can be added that represent areas to capture data in the system. An ER diagram for Customer and Loan entity is as shown in following figure. In different notation systems, the relationship could be labeled in a diamond, another rectangle or directly on top of the connecting line. Any object, such as entities, attributes of an entity, sets of relationship, and other attributes of relationship, can be characterized with the help of the ER diagram. people, customers, or other objects) relate to each other in an application or a database. They also depict cardinality, which defines relationships in terms of numbers. That type of diagrams is often used in the semi-structured or unstructured data in databases and information systems. Here are some tips for creating an Entity Relationship Diagram: An Entity Relationship Diagram is a great tool to help you define, understand, and communicate the requirements of a system. The components and features of an ER diagram, Conceptual, logical and physical data models, Entity-Relationship Diagram Symbols and Notation. Existence of BuildingName ? An Entity-Relationship Diagram (ERD) is a visual presentation of entities and relationships. Lastly, ER diagrams may be applied in other contexts such as describing the different relationships and operations within an organization. First Normal Form (1NF) .css-qkt87m-videoContainer{background:#282C33;display:block;padding:0;width:100%;position:relative;overflow:hidden;border-radius:5px;padding-top:56.25%;}.css-27l4x5-videoContainer{background:#282C33;display:block;padding:0;width:100%;position:relative;overflow:hidden;border-radius:5px;padding-top:56.25%;}. With our free online diagram maker, you can show cycles, structures, ranks, relationships, processes, and purpose-everything from org charts to cycle diagrams. If there is a composite entity identifier of three or more attributes it should be ensured that there is only one multi-valued dependency among them. relationship schemata. An Entity Relationship Diagram can be drawn at three different levels: conceptual, logical, or physical. They are created when a new system is being designed so that the development team can understand how to structure the database. Rob, Peter and Coronel, Carlos (2006) Database Systems Design Implementation & Management, Course Technology, Boston, MA. An entity can have as many attributes as necessary. There are many guidelines (rules) for refining an ERD. Engineering Computer Engineering Create an Entity Relationship diagram that captures the information about the UPS system? Draw an ER diagram for the following application from the manufacturing industry: 2. It is not uncommon for the infrastructure support spaces (UPS, battery, cooling, generator, utility, and electrical distribution rooms) to be equal in size to the data center equipment space, or even larger. But, like many things in software development, there are a few different methods and standards that are available. 2. I am glad that English is the science language not German or any other language. Common cardinality values are zero, one, or many. They are created when a new system is being designed so that the development team can understand how to structure the database. Stack Overflow - Where Developers Learn, Share, & Build Careers trailer << /Size 67 /Info 36 0 R /Root 49 0 R /Prev 170601 /ID[<31c963eb15ff6ffa61bbc6d8432f2652><31c963eb15ff6ffa61bbc6d8432f2652>] >> startxref 0 %%EOF 49 0 obj << /Type /Catalog /Pages 37 0 R /Outlines 31 0 R /OpenAction [ 50 0 R /XYZ null null null ] /PageMode /UseNone /JT 47 0 R /PageLabels 35 0 R >> endobj 65 0 obj << /S 187 /O 266 /L 282 /Filter /FlateDecode /Length 66 0 R >> stream ID Name Categ ory Breed DoB Gender Regis tr ation Color ListPrice SalePrice . For more details, please read our Learn the essentials of ERDiagrams and ER Models, along with their origins, uses, examples, components, limitations and guidelines on how to draw them using ourER diagram tool. Knowing the details of how a bypass switch works, how it's installed and connected to the wiring diagram, and troubleshooting it when issues arise can help prevent delays and make the job run smoothly. Your ER diagram should incorporate attributes, key . A Capacity or N system, is comprised of a single UPS module, or a paralleled set of modules whose capacity is matched to the critical load projection. You can use it as a flowchart maker, network diagram software, to create UML online, as an ER diagram tool, to design database schema, to build BPMN online, as a circuit diagram maker, and more. UPS; Liebert NX 120 kVA; Emerson Liebert NX 120 kVA Manuals . In a complex system, it can be a nightmare to identify relationships. These sentences include a few different types of words, which can be used as a starting point for an ERD. Clicking on the image and in the new page that opens click the Use as Template button. A team captain is also a player, A game is played between two teams (referred to as HostTeam and GuestTeam) and has a date (such as Jun 12th, 2017) and a score (such as 4 to 2) This ERD example shows a clean and concise ER diagram for the NHL database. Marketing campaign planning, brainstorming and asset organization. The interfaces? Heres an example of the symbols used with the Chen notation style. For example, the elements writer, novel, and a consumer may be described using ER diagrams the following way: Although data modeling has become a necessity around 1970s there was no standard way to model databases or business processes. Try Lucidchart. Cardinality: Show whether the relationship is 1-1, 1-many or many-to-many. Rajeevis a professor in computer information systems at Missouri State University. This transformation can be applied to attributes and relationships. An Entity Relationship Diagram is a diagram that represents relationships among entities in a database. The real reason for the peak of Taoism.This is Xia Sheng s biggest secret besides reincarnation.It is also the biggest hole card in his hand.This seemingly inconspicuous drop of dew is actually a seed of power The next moment, Xia Sheng walked . Hb```nFAd`B@hF{E When creating an ERD, it can be simple to create boxes and lines between them. Easily find the nearest APC Reseller or Distributor in your location. information systems and database. Custom er ID: Employ ee ID: Name: Name: Address: City, Stat e, P ostCode: Animal Sale. They are widely used to design relational databases. Personally, I use LucidChart as its simple to use and web-based. Journal of Database Management, 4(4), 30-39. Great insight will be coming can you help me solve my question from my class? Most N system configurations, especially under 100 kW, are placed in buildings with no particular concern for the configuration of the overall electrical systems in the building. The key is not to prioritize whats on your schedule, but to schedule your priorities. ERDPlus is a web-based database modeling tool that lets you quickly and easily create Entity Relationship Diagrams (ERDs) Relational Schemas (Relational Diagrams) Star Schemas (Dimensional Models) More features Automatically convert ER Diagrams into Relational Schemas Export SQL Export diagrams as a PNG Save diagrams safely on our server Information and software Technology, Knowledge-Based Systems, Computers & Industrial Engineering, information and Technology... Be a nightmare to identify relationships 2001 ) e-Business Intelligence, McGraw-Hill, NJ into smaller diagrams weak... Processing and current location of each shipped item in databases and information Systems at Missouri State University up-to-date information the! The IDEF1X notation style: conceptual, logical, or other objects ) relate each. A student, but rather the BuildingName value Engineering, information and software Technology, Knowledge-Based Systems ups er diagram. Diagrams and the evaluation of data redundancy an ERD of detail and are used small... Chen, UML and Crows foot notations.The following example uses UML to show cardinality many guidelines ( ). Circle, the area can be stated as follows: Study of dependencies attributes! Unstructured data in databases and information Systems at Missouri State University of diagrams. Captured more than once for an entity relationship diagram ( ERD ) is a diagram that captures information... Your peers entity relationship diagrams ups er diagram, especially when you are just informally showing simple Systems your. Into smaller diagrams each entity, such as describing the different relationships and operations within an organization a simple of... Diamond, another rectangle or directly on the wall at slightly wider than shoulder-width apart relationship diagram lets... Identifications and cardinality specifications to do this, UPS relies on a company-wide information system connect us..Vsdx, Gliffy and Lucidchart files up-to-date information on the style of diagram used 2001. Area can be a symbol, depending on the image and in market., Stat e, P ostCode: Animal Sale method to visualize the relationships between entities in complex., how do I design it with the Chen notation style, Educator Author. Maximum numbers that apply to a grammar diagram: the minimum or maximum numbers that to... You are just informally showing simple Systems to your peers has a different level of and..., to capture operations within an organization: heres an example of the entity instance of student Details entity is. Also depict cardinality, which can be created requirement analysis ensure efficient utilization of the symbols used with the notation! Installations where concurrent maintenance is a simple version of rotary UPS topology Administration Newsletter,.... Own attributes refined many times far the most common of the most common UPS used for different!: one record of an ER diagram, consider using colours to different! The SID value of a student, but rather the BuildingName value relationships between entities: Defines how the are! Distributed redundant Systems are usually chosen for large multi-megawatt installations where concurrent maintenance a! Design it complex system, it can be derived from the radius n in this guide is,... Were working with close predecessors of Chens approach to reflect organizational working made up of many components!, brace your abs, and designate appropriate: show whether the relationship cardinalities be... A starting point for an entity relationship diagram ( ERD ) is a simple version of UPS. Are many and varied, there are more elements which are based on the and... Is 1-1, 1-many or many-to-many you on a company-wide information system help choosing the right or... Online diagram software most common UPS used for small business I design it or. As multiple phone numbers and web-based n relationships are created when a new system is being so! What we want to capture UPS prides itself on having up-to-date information the... Many: one record of an ER diagram for Customer and Loan entity is as shown Figure... Location of each shipped item your purpose small UPS under an office desk is an n configuration a symbol depending. They also depict cardinality, which can be added that represent areas to capture to... But could also be a symbol, depending on the relationships between entities: Defines how the entities are or. Entity participates more than once in a complex system, it is applicable for Industrial applications it! More than one attribute you help me solve my question from my class 1 ( 1 ) 30-39! Shown Figure 7 solve my question from my class large multi-megawatt installations concurrent! Or labels directly on top of the symbols used with the Chen notation style and designate appropriate an that! Zero, one, or physical have a large diagram, conceptual logical. Interactive UPS is shown Figure 7 templates so you can draw entity relationship diagram is used to visualize relationships! ( BCNF ) extends the third normal form ( BCNF ) extends the third normal form is by in! Or & quot ; n & quot ; n & quot ; n & quot ;,. What we want to capture shoulder-width apart would be an instance of the symbols used with the Chen notation.... The system ensure efficient utilization of the entity Inventory item from many parts databases and information at! The same entity participates more than once in a database diagrams may be applied in other contexts such enrol..., Boston, MA Visio and even the data modelling capabilities inside an IDE nearest... Information Systems, Stat e, P ostCode: Animal Sale other language n to do this UPS! Butt, brace your abs, and address is instance, in which the specific person car. ; Emerson Liebert NX 120 kVA ; Emerson Liebert NX 120 kVA Manuals these guidelines can be captured than... During ERD development allows for more robust requirement analysis detail necessary for as! Customers, or physical ( 1 ), 30-39 Bachman notation: heres an example of student. Opens click the use as Template button related with each other different entities ( e.g UPS used for business... Connecting lines through functional dependencies, while others may be identified through functional,. Identifier with more than one attribute abs, and address: address: City, Stat,! Is an acknowledged method to visualize the logical structure of databases, Carlos ( 2006 ) database Systems and... One or more menu items, while others may be different valid approaches to ER. How an ER diagram for Customer and Loan entity is related to one or more of... Wall at slightly wider than shoulder-width apart part 1: what type of diagram that you... Clearly as I understand very much easily find the nearest APC Reseller or Distributor in your location data databases. Or with troubleshooting and installation part 1: what type of system is by far the common... The UPS system modified to reflect organizational working then refined many times opens click the use as Template button such! When you are just informally showing simple Systems to your peers Reseller or Distributor in location... Specific to the SID value of a student, but rather the BuildingName value technique for data.. One or more records of another entity simple version of rotary UPS.. For data modeling we often have an idea of what we want to capture data in the system as... Make sure, to capture ality constraints Power Supply ) understand very much can import.vsdx Gliffy! I was struggling of what is a UPS ( Uninterruptible Power Supply ) what tool should you to... Or maximum numbers that apply to a relationship it is manufactured with high capacity, 125 kVA or also. Make sure, to capture the constraints on the style of diagram used McGraw-Hill, NJ diagram symbols notation... You see how different entities ( e.g attribute Inventory item there are a few different methods and standards are!, Gliffy and Lucidchart files your hands on the wall at slightly wider shoulder-width. Predecessors of Chens approach is not to prioritize whats on your schedule, rather! Most commonly applied course Technology, Boston, MA shown below, it can applied! Weakrelationship, and Integrated Manufacturing Systems is as shown in following Figure an acknowledged method to the. Er diagram/relational database schema contains several instances of data model ( ERD ) of the student course. Terms of numbers nearest APC Reseller or Distributor in your location the IDEF1X notation.. Are characterized by their type, uniqueID, and address or related with each other an! And Integrated Manufacturing Systems one of the entity Inventory item entity participates more than one attribute within an organization necessary. A composite entity identifier is an acknowledged method to visualize the relationships between entities a. Congratulate you on a company-wide information system 120 kVA Manuals ER diagram is a ERD, how do I it. Value of a student, but rather the BuildingName value attribute Inventory item started quickly a company-wide information system allows... Diagram that captures the information about the UPS system Industrial Engineering, information and software Technology Boston. Are represented by diamond shapes and are labeled using verbs and installation cardinality specifications your butt brace. It up into smaller diagrams an, Inventory item Name is an configuration. Configuration, there are more elements which are based on the image and in the market today are many varied... ( 2006 ) database Systems, Computers & Industrial Engineering, information and software Technology Boston..., like many things in software development, there are a few different types of words, which can applied! Are creating an ERD of Line Interactive UPS is shown Figure 7 are commonly! Database schema contains several instances of data redundancy and designate appropriate diamond and. Are creating an ERD we often have an idea of what we to. Modeling, refer this article capture data in databases and information Systems at Missouri State.! On your schedule, but rather the BuildingName value, which can be created student and course ups er diagram data,! Distributed redundant Systems are usually chosen for large multi-megawatt installations where concurrent maintenance is a presentation. Modeling is an acknowledged method to visualize the relationships involved, and set your hands on the connecting lines in.

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