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1Relational database.A database that uses a series of tables to store information.
The tables contain related information and are connected with each other.
2Productivity.A measure of the efficiency of an organisation or individuals.
3Entity.A real world thing about which information needs to be stored and maintained.
Example patient, doctors, appointments, treat meats, drugs.
Each entity will have its own table in a data base.
4Entity relationship diagram.A diagram that illustrates the relationship between entities ( tables) in a data base.