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PRINCIPLES OF DATABASE
1. State the following terms:a) Database b) Database Management System c) Entity d) Attribute e) Relationship
2. Discuss the Three Level Architecture of DBMS.
3. Write short note on:a) Relational Data Model b) Hierarchical Model
4. Explain characteristics of different types of storage devices.
5. Describe file organization. Discuss several possible ways of organizing records in files.
6. What is second normal form and third normal form.
Optimistic Concurrency Control Is locking the only way to stop concurrency related problems? There exist some other ways too. One such way is known as an Optimistic Concurrency
he SQL query that will return the order number, quantity ordered, price each and total cost of an order (quantity * price each) from the order details table. Label the calculated c
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Consider the relations EMP(ENO,ENAME,AGE,BASIC_SALARY) WORK_IN(ENO,DNO) DEPT(DNO,DNAME,CITY) Express the following queries in SQL (i) Find names of employees who work in a dep
What is serialization? Where it is used and why? Serialization is a basic term used for mechanisms which enable objects and object structures to be converted into portable for
Removing a Synonym: DROP SYNONYM D30;
Explain Recursive relationship type? Recursive relationship type: A recursive relationship is one in that the similar entity participates more than once in the relationship
Example -GRANT CREATE SESSION TO MCA12; (This command gives system level permission on creating a session - not portable) GRANT SELECT ON EMP TO MCA12; (Object level permi
How many types of Views are there? There are Four types of views:- Database View Help View Projection View Maintenance View
Explain the disadvantages of creating a temporary table? If you have already created a temporary table with a shown name and attempting to create a second one with that nam
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