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Which of the following is NOT a file extension for a database file?

Correct answer: D. mdb

  • A. dat
  • B. dbf
  • C. wks
  • D. mdb

Explanation

The correct answer is (D) .mdb.Here's why the other options are file extensions for database files:.dat is a generic data file extension that can be used to store any type of data, including database files. Some database management systems use .dat as a file extension for their data files..dbf is a file extension commonly used by dBase, a popular database management system for DOS and early Windows operating systems. There are also other database management systems that use the .dbf extension..wks is a file extension used by Microsoft Excel spreadsheets. Excel can also be used to store and manage data in a way that is similar to a database, so .wks files can be considered a type of database file..mdb was a file extension used by Microsoft Access, a popular database management system for Windows. Microsoft Access versions 2007 and later use the .accdb file extension instead

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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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