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Which method of access uses key transformation?
A Hash method of access uses key transformation.
Before we talk about the relational model in more detail, let us first define some very basic terms used in this model. Tuple Every row in a table shows a record and is cal
Types of Data fragmentation
Define weak and strong entity sets? Weak entity set: entity set that do not have key attribute of their own are known as weak entity sets. Strong entity set: Entity set that
The need for three level architecture The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.
wh
What is the difference between link and reference? The fundamental difference between links and references is that links are symmetrical on the other hand references refer only
Example- Search the salary of employees who are not 'ANALYST' but get a salary below than or equal to any people employed as 'ANALYST'. SELECT EMPNO, ENAME, JOB, SAL FROMEMP
explain cascading rollback
tell me the functionality,advantages and disadvantages of student database
Using a labelled diagram explain the operation of the Data Warehouse, define the basic architectural components and outline the main functionalities. Briefly explain the role an op
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