What is a relational database query explain with an example

Asked by admin @ 04/08/2021 in Social Sciences viewed by 436 People

What is a relational database query? explain with an example?

Answered by admin @ 04/08/2021

A relational database is a set of tables containing data fitted into predefined categories. Each table which is sometimes called arelation contains one or more data categories in columns. Eachrowcontains a unique instance of data for the categories defined by the columns. For example, atypical business order entry database would include a table that described a customer with columns for name, address, phone number, and so forth. Another table would describe an order: product, customer, date, sales price, and so forth. A user of the database could obtain aviewof the database that fitted the user's needs. For example, a branch office manager might like a view or report on all customers that had bought products after a certain date. A financial services manager in the same company could, from the same tables, obtain a report on accounts that needed to be paid.

What is a relational database query explain with an example

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