Difference between revisions of "Database Terminology"
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==Database Basics== | |||
* A character is the basic unit of data, and it can be a letter, number or special symbol | * A character is the basic unit of data, and it can be a letter, number or special symbol | ||
** A group of related characters (for example, the characters that make up a customer's name) is called a field) | ** A group of related characters (for example, the characters that make up a customer's name) is called a field) | ||
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[[#Database | [[#Database Basics|Back To Top]]-[[Main_Page| Home]] - [[Oracle_SQL|Category]] | ||
Revision as of 14:52, 11 September 2017
Database Basics
- A character is the basic unit of data, and it can be a letter, number or special symbol
- A group of related characters (for example, the characters that make up a customer's name) is called a field)
- A field represents one attribute or characteristic (the name, for instance) of the customer.
- A collection of fields about one customer (for example, name, address, city, state, and zip) is called a record
- A group of records about the same type of entity (such as customers or inventory items) is stored in a file.
- A collection of interrelated files-such as those relating to customers, their purchases, and their payments- is stored in a database.
Database Design System Development Life Cycle (SDLC)