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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
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
What is a dataset? A dataset is an in-memory database that is disconnected from any regular database, but has all the significant characteristics of a regular database. Dataset
What is a block and a block number? A block is a contiguous sequence of sectors from a single track of one platter. Every request specifies the address on the disk to be refere
For the question given below, you are required to submit design and implementation documentation as described over the page. Design, implement (in Java), test and document a set of
List some security violations (or) name any forms of malicious access. A) Unauthorized reading of data B) Unauthorized modification of data C) Unauthorized destruction of
A field-groups statement or an insert statement reverses storage space and transfers values. False.
Data slice explanation
wh
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
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