-Given the following relational DB schema and the following SQL query: Student (sid, name, age, address) Book(bid, title, author) Checkout(sid, bid, date) SELECT S.name FROM Student S, Book B, Checkout C WHERE S.sid = C.sid AND B.bid = C.bid AND B.author = ’Olden Fames’ AND S.age > 12 And assuming: There are 20, 000 Student records stored on 2000 blocks. There are 50, 000 Book records stored on 5, 000 blocks There are 300, 000 Checkout records stored on 15, 000 blocks. Student ages range from 7 to 24. Using heuristic rules, show a physical query plan for this query, assuming there are no indexes and data is not sorted on any attribute.

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Intermediate SQL Concepts

A query is a request for data or information from one or more database tables. This information could be presented in the form of pictorials, graphs, or complicated findings which helps in easy interpretation. Structured Query Language (SQL) is the most widely used programming language for retrieving and organizing data from relational databases. Collection of tables with rows and columns is referred to as a database. SQL is the language of databases. It makes it easier to extract specific data from databases, which can then be used for analysis.