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A database to track your progress in your college program will track your progress towards graduation! A database that has information containing the classes that you have taken, classes that you need to take, course grades, instructors, and even classes that will transfer to your desired four year college university will keep you on a steady track to graduation.
A database that contains information on your college program and tracks your progress is very useful and contains many benefits.
Benefits---
A database that contains information on your college program will help you keep an eye on your GPA. You can track your grades and make sure that your GPA is in good standing. With having information of your grades and which instructors taught which classes, you can even tell your friends and classmates which instructors you liked and which ones you didn't.
We face problem of stock Opening balance and closing balance in Minus
When It is better to use files than a DBMS? It is better to use files than a DBMS when Multiple users wish to access the data.
Example - ALTER TABLE emp MODIFY (empno NUMBER (7));
what is specialization?
Give the reasons for allowing concurrency? The reasons for allowing concurrency is if the transactions run serially, a short transaction might have to wait for a preceding long
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
Which two files are used during operation of the DBMS? Data dictionary and transaction log are two files used during operation of the DBMS.
Benefits and limitations
Which data manipulation command combines the records from one or more tables ? JOIN data manipulation command combines the records from one or more tables.
Update or Modify operation alters the existing values. If these operations alter the value that is the foreign key also, the only check need is the similar as that of the Insert op
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