Database Terminology

Database Basics

Captures the functional and informational needs of a business
Is based on current needs but may reflect future needs
addresses the needs of a business(what is conceptually ideal), but does not address its implementation (what is physically possible)

===Schema - Set of db objects representing part or all of a business enterprise

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)