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What are the properties in a relation ?
In a relation Ordering of rows is immaterial and No two rows are identical.
Define identify relationship? Identifying relationship: An identifying relationship means in which the child table cannot be uniquely recognize without the parent. For exampl
Determine Which is not a consequence of concurrent operations? Ans: Update anomaly.
Consider a bank that has a collection of sites, each running a database system. Suppose the only way the databases interact is by electronic transfer of money between one another,
What are the typical phases of query processing
Project Description: This is going to be a School portal to handle each activities in school such as, School fees payment, online registration and every other payment, course re
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
Competition entrants can be either Individuals, or Teams. A Team is usually sponsored by a business, and, in that case, the team members would all wear T-shirts with the sponsoring
how to write a in a text and load it on mysql
The Incident table, with an auto-incrementing incident number, etc, looks like: incident_num reporter date time incide
Define reference file
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