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Explain I command in QBE ?
I : It is the command in QBE that is used to insert tuple (s) into the database
List the Armstrong's axioms for functional dependencies. What do you understand by soundness and completeness of these axioms? Ans: The Armstrong's axioms are: F1:
using the invoice table shown below,write the relational schema,draw a dependencies,inclunding all partial and transitive dependencies.assume that the table does not contain repeat
In this practical assignment, we will run through a complete database application development cycle, starting with the schema design, from an initial data import to database applic
Differentiate between horizontal & mixed horizontal fragmentation?
I want to buy this but I want to see a couple sample questions first. http://www.expertsmind.com/library/what-happens-to-rms-error-for-the-training-data-set-51564843.aspx
What is the difference among a primary index and a secondary index? Primary Index: A primary index is an ordered file whose records are of fixed length along with two fields.
Authorisation Authorisation is the culmination of the administrative policies of the organisation. As the name shows, authorisation is a set of rules that can be used to verif
Project Description: I would like to get a database of a website which has clients email name and phone number. If you are able to get information from a website, by entering
explain cascading rollback
(a) Why did SAP introduce the extended star schema?
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