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List the table modification commands in SQL?
A) Deletion
B) Updates
C) Insertion
D) Update of a view
Lost Updates : Suppose the two transactions T3 and T4 run simultaneously and they happen to be interleaved in the following way (suppose the initial value of X as 10000):
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
wh
Attributes and its types explain?
Describe the GRANT function and explain, how it associates to security. What kind of privileges may be granted? How are they revoked? Ans: Since more than one user can aacce
First Normal Form and second normal form First Normal Form (1NF) A relation is said to be in 1NF if it having no non-atomic values and each row can give a unique combinat
What is data integrity? Ans: It is the data consisted of in database that is accurate and consistent. (Data integrity means that the data should be valid as per to the give
I have a small project that contains 3 deliverable s. I have done the first one and I would like you to help me with second one
Explain the two types of participation constraint. Total: The participation of an entity set E in a relationship set R is said to be total if each entity in E participates i
what are the type of the database
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