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Determine the OBJECTIVES of object design
After passing through this unit, you should be able to:
Although how will the system recover The selection of REDO or UNDO for a transaction for the recovery is completed on the basis of the state of the transactions. This state is
What are the situations while DBMS should not be used? DBMS should not be used in situations like: (i) No need of security. (ii) Not difficulty to access the data (iii) N
What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.
Create centralized relational database using bottom up method. (a) Recognize a single un-normalized relation for the above scenario. (b) Recognize the primary key for
what is 3nf
how design database from begining
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
Differentiate sub-class and super-class? The specialization of a class is known as subclasses.eg: employee is a subclass of person and teller is a subclass of employee. Convers
#question benefits and limitations of data models..
Explain the Relational Completeness Codd described the term relational completeness to consider to a language that is complete with respect to first-order predicate calculus ex
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