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List the drawbacks of relational database system
A) Repetition of data
B) Inability to s certain information.
Should I select imaging software that allows changes? An imaging system should not give features to edit or alter images. Images generally are formed as safe and secure records
Consider the subsequent relations for a database which keeps track of business trips of salespersons in a sales office: SALESPERSON (SSN, Name, start_year, Dept_no) TRIP (SSN, Fr
The following variant of the primary copy asynchronous-update replication protocol has been proposed for totally replicated systems. (a) A transaction executing at site A updat
To delete a particular column in a relation which command is used ? To delete a particular column in a relation ALTER command is used.
What is the max. no. Of structures that can be included in a table or structure. Nine.
These permit the user to unload a database or parts of a database and reload the data on the similar machine, or on another machine in a dissimilar location. This can be useful in
Example RELATION SCHEMA for STUDENT: STUDENT (Roll No: string, name: string, login: string, age: integer) RELATION INSTANCE
what is completeness constrent?
how to write tables and drow E-R diagrams for hosiptal management system and how to normalize and cardinalities?
Security: In a centralised system, access to the data can be simply controlled. Though, in a distributed DBMS not only does access to replicated data have to be controlled in many
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