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To delete a particular column in a relation which command is used ?
To delete a particular column in a relation ALTER command is used.
case study
Enumerate or state the steps in creating a relevant database of a shop.
Gaps in sequence values can happen when: - A rollback happens that is when a statement changes are not accepted. - When the system crashes - When a sequence i
how the string works as keyword?
What is an entity relationship model? The entity relationship model is a set of basic objects known as entities and relationship between those objects. An entity is a thing or
What is NULL? Simply NULL means not in value.
Explain the term- Periodic recomputation Periodic recomputation: Base values are often updated in bunches. Sometimes, it is possible to just recompute all derived attributes p
A student entity type has the following attributes,name..
Company XYZ is an advertising company. It has its own website but the search facilities offered are not reliable. The company is willing to invest to acquire new machines and sof
What is relational model feature? A relational model feature is much more data independence than some other database models.
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