Section 3.1 describes the relational data model, which is a particular data abstraction that uses relations or tables to represent the data in a database. Section 3.2 introduces the relational algebra query language, while Section 3.3 introduces the Structured Query Language (SQL) for relational databases. Finally, Section 3.4 discusses the evaluation of relational database queries.
KeywordsRelational Database Query Language Relational Algebra Social Security Number Structure Query Language
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