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Differentiate between a subquery and a join
If we need to acquire information from one or more tables after that either subquery or join can be used. If the columns which are to appear in the result table are from different tables after that a join must be employed.
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
The database depicted in the Visio diagram describes Proceeding , Article , Researcher , article PublishedIn a proceeding, article WrittenBy researchers and proceedings Edi
what is object-identity
Describe about Use Case and external case in DFD The processes are transformed those into the Use Case and external case in DFD has same characteristics which of an actor in O
What Is Recovery? During the life of a transaction, i.e., a after the start of a transaction but before the transaction commits, various changes may be made in a database state
Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
difference between MIS and DSS
What is Primary key? Primary Key - Primary key is one of the candidate keys which uniquely identifies each row in the relation.
Question 1 Draw a Data Flow Diagram for a University scenario Question 2 Discuss the following with suitable examples Relational Algebra Operators Database Pla
Have database built but having problems with some questions that go with the database
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