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Whst is logical schema ?
Logical schema is the entire database.
Different stages of DDLC ?
A buyer for a large department store chain must place orders with an athletic shoe manufacturer six months prior to the time the shoes will be sold in the department stores. In par
Project Description: Oracle Certified Professional with 20 years of practice, Oracle version 6.0.34, 7.3, 8.0, 8i, 9i, 10G, 11G, 12C. Crossplatform migration, Informix, MSSql
Explain how the associations are implemented as classes. A general approach in this case is to transform an association class into a simple class linked to two original classes
Determine the language that needs a user to specify the data to be retrieved with no specifying exactly how to get it is Ans: Non-Procedural DML
Increased parallelism : Since the replicated date has several copies a query can be distributed or can be answered from the smallest loaded site. Also, with more replicas you have
Implementing software control To implement software control designer must redesign strategy of state event model which is present in dynamic model. There are three basic ap
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
what are the purposes of dbms in details
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
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