What is the relational model for database management?
Q: What is the relational model for database management?
A: The relational model for database management is a database model based on first-order predicate logic.
Q: Who proposed the relational model for database management and when was it proposed?
A: Edgar F. Codd proposed the relational model for database management in 1969.
Q: How is data represented in the relational model of a database?
A: In the relational model of a database, all data is represented in terms of tuples, grouped into relations.
Q: What is a database organized in terms of the relational model called?
A: A database organized in terms of the relational model is called a relational database.
Q: What is the purpose of the relational model?
A: The purpose of the relational model is to provide a declarative method for specifying data and queries.
Q: What language do most relational databases use?
A: Most relational databases use the SQL data definition and query language.
Q: How do table, contents of table, key constraints, other constraints, and SQL queries correspond to predicates in the relational model?
A: In the relational model, a table in an SQL database schema corresponds to a predicate variable; the contents of a table to a relation; key constraints, other constraints, and SQL queries correspond to predicates.
