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how many types of data model in DBMS? explain data abstraction with its different level
a project based on normalization with first, second and third normalization. There need to be a diagram also
About Attribute inheritance
Backward Recovery (UNDO): In this system the uncommitted changes made by a transaction to a database are undone. Instead the system is reset to the last consistent state of databa
What is equi join? Equi Join - It generates all the combinations of tuples from two relations which satisfy a join condition along with only equality comparison (=).
Control Files : The redo and control files logs support the rest of the architecture. Every database must have at least one control file, although you have more than one to guard
Homework chapter 10 no 3
describe objectivde of file organisation
can you please explain with the help of suitable example the difference between conflict equivalence and conflict serializability?
To delete a particular column in a relation which command is used ? To delete a particular column in a relation ALTER command is used.
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