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Define the terms 1) physical schema 2) logical schema.
Physical schema: The physical schema explains the database design at the physical level, which is the lowest level of abstraction describing how the data are actually kept.
Logical schema: The logical schema explains the database design at the logical level, which explains what data are kept in the database and what relationship exists between the data.
In a Hierarchical model of data records are organized ? In the hierarchical model of data records are organized as Tree structure.
Describe the shadow paging technique.
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Components of database manager The above functions are reached by the database manager. The major elements of a database manager are: Authorisation control: This mod
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