Modification of a saved database query based on a change in the meaning of a query value over time
a database and value technology, applied in the field of modification of saved queries, can solve the problems of inconvenient generation and storage of queries for future use, affecting the usefulness of future use, and the value used in stored queries may become outdated
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[0023]The present invention relates to database queries. For those not familiar with databases or queries, this Overview section will provide background information that will help to understand the present invention.
[0024]Known Databases and Database Queries
[0025]There are many different types of databases known in the art. The most common is known as a relational database (RDB), which organizes data in tables that have rows that represent individual entries or records in the database, and columns that define what is stored in each entry or record.
[0026]To be useful, the data stored in databases must be able to be efficiently retrieved. The most common way to retrieve data from a database is to generate a database query. A database query is an expression that is evaluated by a database manager. The expression may contain one or more predicate expressions that are used to retrieve data from a database. For example, let's assume there is a database for a company that inclu...
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