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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.
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
construct a b-tree for the following set of key values 2,3,5,7,11,17,19,23,29,31.assume that the tree is initial empty and the values are added in ascending order
A relation has: Relational Schema Relation instance Relational Schema: A relational schema shows the relation's name, its attributes and the domain of every a
WHAT IS MEANT BY E-R MODEL
Explain data independence ? Data independence is the capacity to modify the schema at one stage of a database system without having to change the schema at the further level.
What is equi join? Equi Join - It generates all the combinations of tuples from two relations which satisfy a join condition along with only equality comparison (=).
Can we delete data element, which is being used by table fields. No we cant delete data element.
Ancestry database records information about family trees . Following information is recorded about each person: FIRSTNAME first name SURNAME surname MNAME maiden name (if
Explain Strict Two-Phase locking A transaction T does not release any type of its exclusive (X) locks until that transaction commits or aborts. In this method no other transact
Key to represent relationship amongs tables is called ? A Key that represent the relationship between tables is called Foreign Key.
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