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What is the main difference between read-only and update methods?
A read-only method does not affect the values of a variable in an object, whereas an update method may alter the values of the variables
" Wound-wait" scheme : It is based on a preemptive method. It is based on a simple rule: If Ti requests a database resource that is held by Tj
Which database level is closest to the users? External database level is closest to the users.
What is relationship instance ? Relationship Instance - A relationship is a relation between two or more entities. An instance of relationship set is a set of relationships.
Explain the Log Based Recovery Method? The system log that is generally written on stable storage consists of the redundant data required to recover from volatile storage failu
Which are the two ways in which entities can participate in a relationship? Total and partial are the two ways in which entities can participate in a relationship
Design a gennalization and specialization hierarchy for an automobile sales company
Explain the function of Object model Object model describes the classes of objects in system, including their attributes and operations which they support. The analysis object
The data of a view is not physically stored, but derived from one or more tables. True the data of a view is not physically stored
Write short notes on extension and intension? In any data model, it is significant to distinguish among the description of the database and the database itself the description
Question: (a) One of the steps in the five-step problem-solving model is implementation. Implementation is considered a key step in the problem-solving model. A problem may be
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