Distributed Database (DDB): is a collection of multiple logically related database distributed over a computer network, and a distributed database management system (DDBMS) as a software system that manages a distributed database while making this distribution transparent to the user. Transparency is one of the advantages of the Distributed Database System, where it refers to … Read more

The ERD (Entity Relationship Diagram) is a diagram which contains entities represented by rectangles, attributes represented by ovals connected to the rectangles, and rhombus showing the relationship between each entity......the entity is actually the names of the tables or relations of your database and the attributes are the names of the fields or columns in … Read more

Database Authorization: it is actually controlling the authorizations(the function of specifying access rights to resources) to the database as a whole. Database Audit: this is performed when any tampering with the database is suspected...which consists of reviewing the log to examine all the accesses and operations applied to the database during a certain time period. … Read more