About this document
Understanding Relational Databases and SQL by pacharneajay is a document available to read on EtoBox.
The relational model represents data as mathematical relations (tables) with rows and columns. A relational database consists of a set of relations and supports querying data through languages like SQL. Relations have a schema that defines column names and types, and integrity constraints ensure data validity. Keys uniquely identify rows and foreign keys link rows between relations, enforcing referential integrity.
- Author
- pacharneajay
- Language
- EN