Keep Coding Keep Cheering!
A programming language called SQL (Structured Query Language) was created specifically for managing and modifying relational databases. It offers a common syntax for entering queries and making changes to data in databases. SQL was the first commercial language introduced for E.F Codd’s Relational model of a database. Note: The programming language SQL was created specifically for managing […]
March 12, 2023 | DBMS | No comments
The ER (Entity-Relationship) model is a graphical representation used to design databases. On the other hand, the relational model is a mathematical representation that outlines the connections between database tables. After creating the system’s ER diagram, we must translate it into relational models, which can be instantly implemented by any RDBMS, such as Oracle, MySQL, […]
February 23, 2023 | DBMS | No comments
Relational Algebra is a procedural query language, which takes Relation as input and generates relation as output. SQL and relational databases primarily have their theoretical underpinnings in relational algebra. In relational algebra, the input typically consists of a collection of one or more relations, and the output typically consists of another relation that illustrates the […]
February 21, 2023 | DBMS | No comments
What are Data Models in DBMS? In database management systems (DBMS), a data model is a conceptual representation of data structures, relationships, constraints, and rules used to organize, manipulate and store data. A data model provides a way to describe the structure of a database and how data is stored, retrieved, and updated. There are […]
February 15, 2023 | DBMS | No comments