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A super key is an attribute or set of attributes used to recognize the records uniquely in a relation. For instance, in the Relation PERSON defines earlier PERSON_ID is a super
Explain the Strategy of Database Planning ?
Explain the differences between structured data and unstructured data. Structured data are facts concerning objects and events. The most significant structured data are numeric
Describe the shadow paging technique.
Data Independence This brings us to our next topic: data independence. It is the property of the database which tries to make sure that if we make any change in any level of sc
What are the various properties of Relational tables? Relational tables have 6 properties: 1. Each row is unique. 2. Column values are of the same kind. 3. Values are
I need a professional to prepare a database to collect and store basic information. The information can be basic info such as contact details etc. One requirement i have is f
List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
Define query optimization. Query optimization refers to the process of search the lowest -cost method of evaluating a given query.
Meaningful use refers to the use of certified EHR technology to "enhance quality, efficiency, and reduce health disparities
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