Q1)What do u understand by query? Explain the different types of queries.
Q2) What do you understand by wildcards.Name the special wildcards used in Acess.
Q3) What is Difference between compound criteria and comparison operator.
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Answers
Answer:
1.Types of queries Select queries return information from one or more tables. While this is the most basic type of query, select queries can be used to specify how many results are returned, the order in which they appear, the source(s) used, and the parameters for a record to be included.
2.Wildcards are special characters that can stand in for unknown characters in a text value and are handy for locating multiple items with similar, but not identical data. Wildcards can also help with getting databased on a specified pattern match
3.In compound criteria, we can specify more than one condition criteria query. This enables us to create query that are specific. Mainly two types of compound criteria are used in queries i.e. AND and OR, which are called logical operators.
Explanation:
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Explanation:
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