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Describe Parameteric end users?
Parametric end users might be given update access, but are commonly not permitted to change the structure of data.
3 assignments combined in 1
give me a diagram about physical or internal level
What is a shadow copy scheme? It is simple, but efficient, scheme known as the shadow copy schemes. It is based on making copies of the database called shadow copies that singl
Creating a view: A query can be embedded within the CREATE VIEW STATEMENT A query can have complex select statements containing join, groups and sub- queries A quer
How persistent programming languages differ from traditional programming languages? Database languages vary from traditional programming languages in that they directly manipul
An example of a weak entity is Staff because the availabilityID cannot be uniquely identified unless it is used in conjunction with the foreign key known as availabilityID in the A
What is the full form of DDL? DDL is stand for Data Definition Language.
What are composite attributes? Composite attributes can be separated in to sub parts.
Explain ER Relationship model? An entity-relationship model (ERM): An entity-relationship model (ERM) is an abstract theoretical illustration of structured data. Entity-relatio
System R was developed and designed over a period of 1974-79 at IBM San Jose Research Company. Its purpose was to illustrate that it is possible to create a Relational System tha
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