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Define object-relational systems?
Systems that give object-oriented extensions to relational systems are known as object-relational systems.
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
Mixed fragmentation: Sometimes, horizontal fragmentation or vertical fragmentation of a database schema by itself is insufficient to sufficiently distribute the data for some appli
Illustrate how you can use QBE to perform logical AND and OR operation
Define tuple variable? Tuple variables are used for comparing two tuples in the same relation. The tuple variables are explained in the from clause by way of the as clause.
What do you mean through integrity constraints? Integrity Constraints -An integrity constraint is a condition specified on a database schema and restricts the data in which
Indexed (Indexed Sequential) File Organisation It organises the file like a big dictionary, i.e., records are kept in order of the key but an index is stored which also allows
what is Mapping Constraints? with examples
Why is database design important?
What are the advantages of creating a table from existing table?
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
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