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These permit the user to unload a database or parts of a database and reload the data on the similar machine, or on another machine in a dissimilar location. This can be useful in many situations, such as for creating backup copies of a database at a definite point in time, or for loading data into a latest version of the database or into an entirely dissimilar database. These load/unload utilities may also be used for reorganizing the data in the database to improve performance, such as clustering data together in a exacting way or reclaiming space occupied by data that has become obsolete.
Reporting/Analysis Utilities:
These are used to report and analyse on the data contained in the database. This may have computing values from data, analysing trends in data or displaying data that meets some particular criteria, and then printing or displaying a report having this information.
Entities Let us first be aware of the question: What are entities? An entity is an object of concern used to show the things in the actual world, e.g., table, car, bo
PART MARKING: We will only mark TWO of the four questions below but you must submit answers to all four. We will choose the questions we mark randomly and we will supply you with
Security And Integrity After Reading the concepts of database recovery in the last section, let us now deal with a vital concept that helps in minimizing consistency errors in
What are object interaction diagrams? Object interaction diagrams are the diagrams that used to describe order in which messages are communicated in execution of an operation,
Deletion Anomalies: Loss of important Information: In some cases, useful information may be lost when a tuple is deleted. For instance, if we delete the tuple corresponding to stu
An orchestra database consists of the following relations: CONDUCTS (conductor, composition) REQUIRES (composition, Instrument) PLAYS (Player, Instrument) Give the relational
Describe the shadow paging technique.
Examples:- Hierarchical Model: It tells data as and relationships by hierarchy of data values. Figure illustrates an example of hierarchical model. Now a day's these models are
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what is check point in database management system
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