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Define an operator that a Relational Algebra does not have
Ans: Relational Algebra does not have Aggregation operators.
Express the properties of Strings? Strings can be case sensitive (or not) which can change the outcome of string operations. You can evaluate whole strings \ just part
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
define anomalies and different types of anomalies with example
Define Database layer? The database layer defines the data formats used in the database.
What is a value? A data value is used for identity. This form of identity is used in relational systems.eg: The primary key value of a tuple recognize the tuple.
Discuss the mechanism to read data from and write to a disk? Disk read/write heads are mechanisms in which read data from or write data to disk drives. The heads have gone by
Write the C++ program having class name studentinfo, that is used to store the VU student information: This class should store your VUID, campus id, name and father name in the fol
After the completion of the logical model the physical model is to be made. The oracle 10 G will be used as a database server and all the tables with their column are created and i
#question.what is mapping constraints and types?.
What is an index? An index is a structure that helps to place desired records of a relation quickly, without probing all records.
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