SQL is a query language and has types_______________?
Correct answer: D. All of the above
- A. Data definition language
- B. Data manipulation language
- C. Data control language
- D. All of the above
Explanation
SQL includes data definition commands such as CREATE, data manipulation commands such as SELECT and UPDATE, and data control commands such as GRANT. Therefore, all three listed categories are represented.
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Databases cover tables, records, fields, keys and relationships, together with database management systems and relational database design. The subject includes primary and foreign keys, normalization, SQL commands such as SELECT, INSERT, UPDATE and DELETE, queries, forms and reports, while distinguishing a database from a spreadsheet used for simple tabular data.
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