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Define query optimization.
Query optimization refers to the process of search the lowest -cost method of evaluating a given query.
Define average latency time. The average latency time of the disk is one-half the time for a full rotation of the disk.
explain three types of internet risks to the consummers whent he business system is data dependent. how can we minimise these risks
There are many simple and complex approaches to implement. These reports are based on some views or certain query. The following number of reports can be built. 1. The averag
diagrams and meaning
What is normalization? It is a method of analysing the given relation schemas based on their Functional Dependencies (FDs) and primary key to attain the properties (1).Minim
What is a Data Flow Diagram? Data Flow Diagram: A data flow diagram is the graph that shows flow of data values from their sources in objects in the course of processes whic
WHAT IS DATABASE TECHNOLOGIES
State about the Activity Diagram Activity diagrams show flow from one activity to other. It is an ongoing non atomic execution within a state machine. Activity finally results
Define identify relationship? Identifying relationship: An identifying relationship means in which the child table cannot be uniquely recognize without the parent. For exampl
What type of view of total database content? Data base content Conceptual view of total database contain.
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