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Abstract

A Client/Server Database System with improved methods for performing database queries, particularly DSS-type queries, is described. The system includes one or more Clients (e.g., Terminals or PCs) connected via a Network to a Server. In general operation, Clients store data in and retrieve data from one or more database tables resident on the Server by submitting SQL commands, some of which specify 'queries'--criteria for selecting particular records of a table. The system implements a 'Data Pipeline' feature for programming replication of data from one database to another in client applications. Specifically, a pipeline object and SQL SELECT statement are built using a Pipeline Painter. The Data Pipeline lets a user (developer) easily move data from a high-end database server (e.g., Sybase) to a local database (Watcom SQL), all without the user having to issue SQL commands. The pipeline object facilitates moving data from one database management system to another, or between databases of the same type.

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First Claim