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What is called query processing?
Query processing refers to the range of activities included in extracting data from a database.
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
what is Nested relational model? Explain with examples.
When It is better to use files than a DBMS? It is better to use files than a DBMS when Multiple users wish to access the data.
notes about update opreation
Which product produces the relation that has attributes of R1 and R2 ? Cartesian product produce the relation which has attributes of R1 and R2
Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.
In an organisation various projects are undertaken. Each projects can employ one or more employees. Every employee can work on one or more projects. Each project is undertaken on
Candidate Key: In a relation R, a candidate key for R is a subset of the set of attributes of R, which have the differnt two properties: (1) Uniqueness: N
i have assignments I don''t have time to finish because of work and other assignments, can you help with this? All are from the book Darabase design, application development and a
want a idea for final year project
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