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List the set operations of SQL?
1) Union
2) Intersect operation
3) The except operation
Consider the relations: PROJECT(proj#,proj_name,chief_architect) EMPLOYEE(emp#,emp_name) ASSIGNED(proj#,emp#) Use relational algebra to express the subsequent queries: (i) Get
What is average response time? The average response time is that the average time for a transaction to be done after it has been submitted.
how many hourse have been spent on a certain project
Which operator is Cartesian product in relational algebra? Cartesian product in relational algebra is a binary operator. (It requires two operands. e.g., P X Q)
What are audit trails? An audit trail is a log of all alters to the database along with information like which user performed the change and when the alter was performed.
WHAT IS SQL
Explain group By clause in SQL? Group By clause in SQL: The GROUP BY clause can be used in a SELECT statement to collect data across multiple records and group the results thro
What is Trigger? Trigger: A database trigger is procedural code which is automatically executed in response to specific events on a particular table in a database. Triggers can
Hi is anyone well versed in accounting information systems available now to help me work through an important assignment due tomorrow at noon?
Give the reasons for allowing concurrency? The reasons for allowing concurrency is if the transactions run serially, a short transaction might have to wait for a preceding long
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