Data description data description language DDL is a syntax similar to a

Data description data description language ddl is a

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i. Data description : data description language (DDL) is a syntax similar to a computer programming language for defining data structures, especially database schemas. DDL statements create, modify, and remove database objects such as tables, indexes, and users. j. Foreign key : Standard Language keyword. Used to define a referential constraint in standard language k. Column: A single unit of named data that has a particular data type (e.g., number, text, or date). Columns only exist in tables. l. Data field : A data field is a place where you can store data. Commonly used to refer to a column in a database or a field in a data entry form or web form. The field may contain data to be entered as well as data to be displayed m. Field properties: Used to control how data is entered in a field n. Row : One set of related values for all of the columns declared in a given table. Also known as a record occurrence. o. Record: an ordered sequence of values of possibly different types p. Cell : It Is formed by the intersection of a row and a column. can be used to store and display different types of data such as text numbers or formula.
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  • Fall '19
  • Caterina Whitus

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