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what is data link layer
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
What is the way a particular application views the data from the database that the application uses? Sub schema is the way a particular application views the data from the data
Components of database manager The above functions are reached by the database manager. The major elements of a database manager are: Authorisation control: This mod
Increased overheads on update : On the drawbacks side, it will need the system to ensure that all replicas of a relation are consistent. This shows that all the replicas of the rel
In E-R Diagram how derived attribute are represented ? In E-R Diagram By Dashed ellipse derived attribute are represented.
Two-way Associations Mostly, associations are travel in both directions, although not usually with same frequency. There are three approaches for the implementation. In
What are the problems if one were not to normalize? When do these problems surface? Ans: Database normalization, sometimes considered to as canonical synthesis, is
BCNF Boyce-Codd Normal Form A relation schema R is in BCNF if it is in 3NF and accepts an additional constraint that for every FD X A, X has to be a candidate key. If a relati
This project will involve designing and creating a database for an organization. In the design of a database, there is no single "perfect" design. So your database design may not
For the relations answer the following queries in SQL Street (name, location, city) House (number, street_name) Lives (name, house_number) (i) Obtain the names of persons who liv
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