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Explain data abstraction?
Data abstraction Data abstraction is a methodology in which enables us to isolate how a compound data object is utilized from the details of how it is constructed from more primitive data objects.
What are the function of DBA?
In E-R Diagram how relationship type is represented ? In E-R Diagram relationship type is represented as a Diamond.
Example RELATION SCHEMA for STUDENT: STUDENT (Roll No: string, name: string, login: string, age: integer) RELATION INSTANCE
We want have a website; we need to test the security of our website. You need to: -Try to bypass our security by simulate a website hacking -Try some hack Techniques like
Assume you are given a uniprocessor system with one gigabyte of memory and a 300 gigabyte disk. The OS on the machine has a demand paged virtual memory system with a local page rep
real life situations where database management system are most suitable
Java program for horrizontal fragmentation in distributed database
What is conceptual model ? A conceptual model is a independent of both hardware and software.
What is a primary index? A primary index is an index whose search key also explains the sequential order of the file.
Use Access 2007 to create a database called UniLib.mdb. - this file should be created on your personal drive at the university (or C: if you're using Access 2007 at home) and t
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