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Question 1:
Define the term business intelligence tools? Briefly explain how the data from one end gets transformed into information at the other end?
Question 2:
What do you understand by data ware house? What are the major concepts and terminology used in the study of data warehouse?
Question 3:
What are the data modelling techniques used in data warehousing environment?
properties of derirable decomposition
Serialisable Schedules: If the processes of two transactions conflict with each other, how to verify that no concurrency related problems have happened? For this, serialisability t
Example: //REVOKE ALL ON EMP FROM MCA12; (All permissions will be cancelled) You can also cancel only some of the permissions. Drop: A user-
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
Depending upon the rules we have found, we can classify the locks into two types. Shared Lock: A transaction might be acquiring shared lock on a data item in order to read it
Explain the following functions of Oracle with suitable examples: (i) To_Char( ) (ii) Count( ) (iii) Trim( ) (iv) Length( ) Ans: (i) To_char( ): The TO_CHAR function conver
how draw er diagram
Why, generally does an object-oriented system use the relational DBMS? The reasons for using relational DBMS for OO systems could be any combination of following: a. Many or
projects?
What is called remapping of bad sectors? If the controller detects that a sector is injured when the disk is initially formatted, or when an attempt is made to write the secto
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