What is relational algebra?Select one:a.The mathematical basis for SQLb.A language used to store data in a databasec.The translation of a query by an SQL compilerd.An informal way to describe how a database works

What is the purpose of relational algebra in database management systems?a.To manipulate and query data stored in relational databasesb.To optimize database performancec.To define database schemasd.To design user interfaces for databases

Relational Algebra is a __________ query language that takes two relations as input and produces another relation as an output of the query.a.Fundamentalb.Relationalc.Structurald.Procedural

What is a relational database? (please select all correct answers)a collection of dataa databasedata are organized by tables and indexesa table containing multiple object representationa table containing only one object representationmarried databasesdata are organized by tables, records and columns

What is Relational Calculus?

This lab will provide an opportunity to use relational algebra. You will use a small set of relations that represent various database situations. You will create relational algebraic expressions and their SQL equivalents using these relations.Additional comments: I need an answer for lab 9 please. Including a screen shot from SQL as well. Thank you.