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Preliminary entities and attributes of human resourse management database management system
Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
Order by clause By using this rows can be sorted It is used in the last portion of select statement By default it gets ascending order DESC: is used
i am required to come up with entities relationships, optionality and cardinality from a scenario. there is a night club and bookings for a musician band
What are the key features of Oracle? Key features of Oracle are as follows: • Read Consistency • Concurrency • Locking Mechanisms • Quiesce Database • RAC • Portability
What is Alternate Key Alternate Key: This is the candidate key which is not taken as the primary key of the table. They are named so because although not the primary key, the
Describe Database state in details? Database state: The actual data within the database at a particular moment in time is known as a database state.
Why is need for the multiple access paths?
Example - ALTER TABLE emp MODIFY (empno NUMBER (7));
Run the following queries. For each query show 1) What you expect the output to be based upon the data 2) the SQL code and 3) the output running the query in Oracle. 1. Show all c
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