Question: Following is a relational database schema SCHOOL STAFF, SCHOOL BOARD, ACTIVITY, PARTICIPATE In each relation schema, the underlined attribute represents the primary key. STUDENT std

Following is a relational database schema SCHOOL STAFF, SCHOOL BOARD, ACTIVITY, PARTICIPATE In each relation schema, the underlined attribute represents the primary key.

Following is a relational database schema SCHOOL STAFF, SCHOOL BOARD, ACTIVITY, PARTICIPATE In each relation schema, the underlined attribute represents the primary key. STUDENT std id address gender grade class president school id fname name STAFF sid fname lname bdate gender Salary role school id SCHOOL school id school name school head id SCHOOL BOARD school id school board name ACTIVITY act id act name act date school id PARTICIPATE std id act id Ranking Specify the following queries on the SCHOOL DB relational database schema using the relational operators (Relational Algebra)

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