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What is object identity? An object retains its identity even if some or all the values of variables or explanations of methods change overtime.
Assigning Responsibility for Operation Many operations might have obvious target objects, but some of these operations could be used at numerous places in an algorithm, by one
Define the terms i) Entity set ii) Relationship set Entity set: The set of all entities of the similar type is termed as an entity set. Relationship set: The set of all rela
Part: Recommended (Non-query) Optimisations This section entitled "Recommended (non-query) optimisations" should be a brief report containing recommended optimisations you would
An example of a weak entity is Staff because the availabilityID cannot be uniquely identified unless it is used in conjunction with the foreign key known as availabilityID in the A
In an E-R diagram how attributes are represented ? In an E-R diagram attributes are represented in a ellipse.
An object-oriented design process 1. Define the context and modes 2. Designs the system architecture 3. Identifies the principal system objects 4. Identifies concurrency in
It defines that no primary key value can be null. This is as the primary key is used to recognize individual tuple in the relation. So we will not be able to recognize the records
how to construct labelled precedence graph for view serialiability.please explain insteps with one solved examples
What is a database? Database - Basically in simple terms A database is a collection of inter related data and/or information stored so which it is available to several users
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