If the information used in the organization, and the way it is used, is static. If the expertise for building and maintaining the DB is unavailable. A poorly designed or maintained DB is probably worse than no DB, and most likely won t be used anyway. Scaling solutions to higher levels of performance and ever growing data stores 3. Increasing data availability 4.
All data is viewed as entities with attributes and relationships .
This information is stored in tables . Any type of query or operation the user does is thus table manipulation, constructing new tables out of existing tables. A relation is a table. It contains rows, columns, and a header. Each row is a record .