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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.
Differentiate sub-class and super-class? The specialization of a class is known as subclasses.eg: employee is a subclass of person and teller is a subclass of employee. Convers
A super key is an attribute or set of attributes used to recognize the records uniquely in a relation. For instance, in the Relation PERSON defines earlier PERSON_ID is a super
What is OLTP (Online Transaction Processing)? In OLTP - online transaction processing systems relational database design use the discipline of data modeling and generally follo
Why Like predicate used for? LIKE predicate: The LIKE predicate searches for strings in which have a certain pattern.
10A.53 Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department. 10A.54 Code an Oracle Database trigger to allow the
What is Collation Collation is a kind of sort order. There are majorly 3 types of sort orders, namely: i.) Dictionary case insensitive ii.)Dictionary - case sensitive
Explain Instance and schemas? Instances and schemas: Databases changes over time as the information is deleted and inserted. The collection of information stored in database
What is 2NF? A relation schema R is in 2NF if it is in 1NF and every non-prime attribute A in R is fully functionally dependent on primary key.
Define data conversion? Helpful to load data into temporary staging tables. Then can write SQL code to do much of data processing. SQL code is simpler and faster to write than
1.Why we need data mining? Give an example to illustrate your answer. 2. Why data mining is considered as "misleading name"? 3. Distinguish the difference between database an
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