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Introducing Queries

Queries are an essential tool in any database management system. You use queries to select records, update tables, and add new records to tables. Most often you use queries to select specific groups of records that meet criteria you specify. You can also use queries to combine information from different tables, providing a unified view of related data items. In this chapter, you learn the basics of creating your own select queries, including specifying selection criteria and using the results of your queries to generate reports and create new tables. You create queries using more than one table in Chapter 10, "Creating Multitable and Crosstab Queries," after you learn the details of how to use operators and create expressions in Chapter 9, "Understanding Query Operators and Expressions."


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