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Write a short note on oracle Instance?
Oracle Instances: An instance is the (executed) Oracle software and the memory they use. It is the instance which manipulates the data stored within the database. It can be begin independent of any database. It consists of:
1) A shared memory area which gives the communication among several processes.2) Upto five background processes that handled several tasks. Whenever an oracle examples starts, the file ‘INIT.ORA' is executed.
Problem 1. Describe the following a) Advantages of Database Systems b) Functions of a DBMS Explanation of part (a) and (b) 2. Explain the following concepts w
Explain cursors in SQL? Cursors in SQL - An object used to store the output of a query for row-through-row processing through the application programs. Cursors are constructs
Define an abstraction by which relationships are treated as higher level entities Ans: Aggregation. It is an abstraction by which relationships are treated as higher level
Explain Recursive relationship type? Recursive relationship type: A recursive relationship is one in that the similar entity participates more than once in the relationship
write short note on mobile database
what is Nested relational model? Explain with examples.
Explain weak and strong entity type ? Weak and Strong entity type: An entity set which does not have a primary key is referred to as a weak entity set. The existence of a wea
Develop C# schoolproject ASAP Helping me with schoolproject. The project is prepared in C# and haves a database connection. We have some small issues asking up data from t
Define the Two Phase Locking Protocol This is a protocol that is used to make sure serializability of transactions. This protocol needs that every transaction issue lock and u
What is relationship? Give examples A relationship is an association between several entities. Example: A depositor relationship associates a customer with every account tha
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