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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
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
Describe Parameteric end users? Parametric end users might be given update access, but are commonly not permitted to change the structure of data.
Explain Strict Two-Phase locking A transaction T does not release any type of its exclusive (X) locks until that transaction commits or aborts. In this method no other transact
How many types of users works on database? Users are differentiated through the way they expect to interact along with the system (i) Application programmers-interact with
Consider the subsequent relations along with keys underlined Street (name, location, city) House (number, street_name) Lives (name, house_number) Define the above relations
case study
For your chosen project, you need to identify the current problem that you wish your project to solve. Produce a Problem Statement. The Problem Statement should explain the purpo
What are composite objects? Objects that have other objects are known as complex objects or composite objects.
sql is relationally complete-justify
Explain four causes for failures in data warehouse projects
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