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System error:These contain errors in database system or the OS, example, deadlocks.Such errors are fairly hard to detect and need reprogramming the erroneous components of the system software.
what is cascading rollback
How can you map NULL values to other values while display? IF( ) , IFNULL( ) keywords are used to do so. They are 'LIMIT' is used for the following kinds of problems: 1) Ans
explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
Explain the function of Object model Object model describes the classes of objects in system, including their attributes and operations which they support. The analysis object
Which two files are used during operation of the DBMS? Data dictionary and transaction log are two files used during operation of the DBMS.
Insertion Anomaly: Inability to show certain information-The primary key of the over relation be (enrolment number, Cno). Any new tuple to be inserted in the relation should have
Define multivalued dependency. What do understand by trivial multivalued dependency? Ans: A multivalued dependency is a full constraint among two sets of attributes in a rela
Illustrate the view of software architecture A model is a semantically closed abstraction of system composes of elements. It can be visualized using any of the following five v
Whenever the LIMIT clause will be used? LIMIT is used for the following kinds of problems: 1) Answering questions about first or last and largest or smallest 2) Splitting
What is object identity? An object retains its identity even if some or all the values of variables or explanations of methods change overtime.
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