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What is the meaning of Data independence?
Data independence means a programs that are not dependent on the physical attributes of data and a programs that are not dependent on the logical attributes of data.
Consider the subsequent relations along with keys underlined Street (name, location, city) House (number, street_name) Lives (name, house_number) Define the above relations
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Ask question #Minim 100 words accepted#what is recovery management component in database management system and how it is useful
What is Index? An index is a physical structure having pointers to the data. Indices are created in an existing table to locate rows more quickly and efficiently. It is possibl
What does Aggregation mean?
What is a foreign key, and what is it used for? A foreign key is used to establish relationships between relations in the relational model. Technically, a foreign key is a colu
You will be analysing a set of financial data of your choice. It is not necessary to collect any primary data of your own, and publicly available secondary data will be sufficient
Database Errors: An error is said to have occurred if the implementation of a command to manipulate the database cannot be successfully finished either due to inconsistent data or
Example: Consider the following relations: ROLLNO NAME ADDRESS COURSE_ID 100 Ka
what is lossless & dependency preserving decomposition ?
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