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What is a data type?

Experience Level: Junior
Tags: DatabasesQuality Assurance (QA)

Answer

In programming languages data type is used to classify what type of data you can store somewhere.

There are couple of basic data types that are used the most often:

  • String (Multiple characters)
  • Character (One character)
  • Integer
  • Decimal
  • Boolean/Bit (Yes/No, 1/0)
  • Date (Date only)
  • Time (Time only)
  • DateTime (Date and time)

Note that exact data type names slightly differ from language to language and from system to system but in general they are very similar and once you learn data types in one language, you will recognize most of the data types in other language.

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