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Illustration of implementation of inheritance Let us take the illustration of implementation of inheritance. Suppose that we are about to implement the Stack class and by now w
Association as a cache This association must be updated when any new element is added to it, but testing for overlap using association is more efficient. Figure:
What is a function group? A function group is a collection of logically related modules that share global data with every other. All the modules in the group are contained in
Which element in the database can modified by changing the data dictionary? Data elements in the database can be changed or modified through changing the data dictionary.
Which two files are used during operation of the DBMS? Data dictionary and transaction log are two files used during operation of the DBMS.
give some example real life situation where DBMS are most suitable
Question: In a multi-user database environment, locking mechanisms can be used to solve the three basic problems of concurrency. On the other hand, however, locking may also le
Question 1 Create a table student with attributes student name, roll number, total marks and percentage. Do the following operations Insert details in to the table Update
Explain the Static or conservative Two Phase Locking: Static (or conservative) Two Phase Locking: In this type of scheme, all the data items are locked earlier than any opera
Express the following queries in SQL: (a) Write the SQL code that will create ALL the four tables given in the appendix. Your answer should not contain the primary key and
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