The record based database model consists of a number of fixed format records of different types.
Each record type defines a fixed number of fields of a fixed length.
Are …
Centralized control - Data access and management can be controlled centrally.
Reduction of redundancy …
Database schema is the overall design of a database.
The database changes over time as data is inserted, updated or deleted.
Database instance is thus the data in the database …
A database is a collection of inter-related data organized meaningfully for a specific purpose e.g employee database.
Data are known facts that can be recorded and have a specific meaning …
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