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What is a SELECT operation?
The select operation selects tuples that please a given predicate. We use the lowercase letter σ to denote selection.
With the help of a suitable diagram gives module wise explanation of system architecture of DBMS.on..
Some disadvantages of File Oriented System ?
What is deadlock? How can it be avoided? How can it be resolved once it occurs? Deadlock happens when two transactions are each waiting on a resource that the other transaction
What is B-Tree? A B-tree eliminates the redundant storage of search-key values .It permits search key values to appear only once.
In E-R Diagram how relationship type is represented ? In E-R Diagram relationship type is represented as a Diamond.
Self-Join: In a self join a table is joined with itself. Let consider the following sample partial data of EMP table EMPNO ENAME MGRID
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
We define a view in SQL through using the create view command. To describe a view, we must provide the view a name and must state the query in which computers the view. The form of
Benefits and limitations
Ask questApollo Hospitals (AH) is a popular medical service provider in Oman. AH wants to automate its business functions into an information system. The proposed information syst
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