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Defining Internal Classes and Operations
When we enlarge algorithms, new classes can be added to the store intermediate results. A complex operation could be looked at, as a collection of many lower level operations i.e. a high level operation is broken into many low level operations. These lower level operations must be defined during design phase.
Ask q“A database will be made to store information about patients in a hospital. On arrival, each patient’s personal details (name, address, and telephone number) are recorded wher
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Write short notes on domain relational calculus The domain relational calculus uses domain variables that take on values from an attribute domain rather than values for whole t
Oracle & Distributed Databases 1. Differentiate between PL/SQL functions and procedures. 2. Draw the diagram of logical structure of oracle database and explain it in brief.
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What is first normal form? The domain of attribute must contain only atomic (simple, indivisible) values.
Why older data models are being replaced by new data modelling 100 words accepted#
Define Outer join Outer join - If there are any type of values in the one table that do not have corresponding value(s) in the other, in an equi-join which will not be selected
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Entity types that do not have any key attribute, and therefore cannot be identified independently, are known as weak entity types. A weak entity can be recognized uniquely only by
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