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  1. The relation with one attribute is called unary relation, with two attributes is known a binary relation and with three attributes is known as ternary relation. For example: in the Student relation, the total number of attributes is 5, so the degree of the relations is 5.

  2. ER (Entity Relationship) Diagram in DBMS. ER model stands for an Entity-Relationship model. It is a high-level data model. This model is used to define the data elements and relationship for a specified system. It develops a conceptual design for the database.

  3. A relational database collects different types of data sets that use tables, records, and columns. It is used to create a well-defined relationship between database tables so that relational databases can be easily stored.

  4. 4 Φεβ 2024 · The relational model uses a collection of tables to represent both data and the relationships among those data. Each table has multiple columns, and each column has a unique name. Tables are also known as relations. The relational model is an example of a record-based model.

  5. 19 Σεπ 2024 · Introduction of Relational Model and Codd Rules in DBMS - GeeksforGeeks. Last Updated : 19 Sep, 2024. It proposes a relational database model developed by Dr. E.F. Codd, wherein data is presented in tabular form using the concept of relations; that is, two-dimensional tables. Its other key features are as follows:

  6. The relational model is the theoretical basis of relational databases, which is a technique or way of structuring data using relations, which are grid-like mathematical structures consisting of columns and rows.

  7. 23 Ιαν 2022 · The relational model in DBMS is an abstract model used to organize and manage the data stored in a database. It stores data in two-dimensional inter-related tables, also known as relations in which each row represents an entity and each column represents the properties of the entity.

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