a. Declare the schema with primary and foreign keys. (At least three relations should be developed.) b. Declare your relations using the SQL DDL. c. Specify a number of queries (including at least 2 queries, 1 insert, 1 update, and 1 delete) in SQL that are needed by your database application. (Description of query + SQL Code)

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SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.