Given the following STUDENT relation below, the set of {Ssn, Name} is an example of a Name Ssn Home_phone Address Benjamin Bayer 305-61-2435 (817)373-1616 2918 Bluebonnet Lane NULL Chung-cha Kim 381-62-1245 (817)375-4409 125 Kirby Road NULL Dick Davidson 422-11-2320 NULL 3452 Elgin Road (817)376-9821 265 Lark Lane Rohan Panchal 489-22-1100 Barbara Benson 533-69-1238 (817)839-8461 O minimal superkey O superkey O foreign key O primary key 7384 Fontana Lane Office_phone Age Gpa 19 3.21 18 2.89 (817)749-1253 25 3.53 (817)749-6492 28 3.93 19 3.25 NULL

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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.