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What is the main difference between read-only and update methods?
A read-only method does not affect the values of a variable in an object, whereas an update method may alter the values of the variables
Which language has presently become the defacto standard for interfacing application programs along with relational database system? The language which has recently become the
What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
What is a security? Securities are claims on financial assets. They can be illustrated as "claim checks" which give their owners the right to receive funds in the future. Sec
Explain entity integrity and referential integrity rules within relational model. Show how these are realized in SQL? Entity Integrity Rule - No primary key value could be nu
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what is query processing?
Define object-relational systems? Systems that give object-oriented extensions to relational systems are known as object-relational systems.
What is D command work in the respect of QBE? D: It is the command inside QBE to delete tuple(s) from the relation.
Data Control The data control mostly refers to commands that permit system and data privileges to be passed to several users. These commands are usually available to database admi
Serialisable Schedules: If the processes of two transactions conflict with each other, how to verify that no concurrency related problems have happened? For this, serialisability t
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