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Object-based Models: Use objects as key data representation components.
Examples:-
Describe Parameteric end users? Parametric end users might be given update access, but are commonly not permitted to change the structure of data.
What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys
why are older data base model are being replaced by new data model
Using your cache simulator and using smalltex.din as your memory trace determine the total miss rate, compulsory miss rate, capacity miss rate, and conflict miss rate for the follo
How to create a table from existing table? Create table as e.g, To create a new table ‘N_emp' with employee names and their identification numbers only from employee ta
What is normalization? It is a method of analysing the given relation schemas based on their Functional Dependencies (FDs) and primary key to attain the properties (1).Minim
Explain retrieval in QBE? Retrieval in QBE : A "GUI" for expressing queries. Based on the Domain Relational Calculus (DRC) Actually invented before GUIs. Very co
What do you mean by DBMS? What is its need and what are its goals. Explain? OR Explain Data Base Management System? Sol. Database management system is a
What is deadlock? Neither of the transaction can ever proceed with its normal implementation. This situation is known as deadlock.
why we fregment at all?
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