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Views
Views

... expect a certain set of tables with certain columns. We can fix this by having our applications access views rather than base tables. When the base tables change, existing applications still work as long as the views are correct. Dr. Nan Wang ...
Bind Variables, Dynamic SQL, and other catastrophes
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... How does DeKlarit get the RefereeName into the ConventionEvent? Because RefereeID is the primary key for a structure elsewhere, DeKlarit’s generated code for the ConventionEvent structure will do the join to pull the RefereeName out of the Referee table. This provides the programming convenience we ...
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Spatial databases - School of Computing
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Database and Data Analytics
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... 3. MS is not an SMDS-media source., and func_call is a query in QL(MS).  Thus, there are 2 differences between HM-SQL and SMDSSQL: 1. func_calls occurring in the WHERE clause must be explicitly annotated with the media-source involved, and 2. queries from the query languages of the individual (nonS ...
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... 3. MS is not an SMDS-media source., and func_call is a query in QL(MS).  Thus, there are 2 differences between HM-SQL and SMDSSQL: 1. func_calls occurring in the WHERE clause must be explicitly annotated with the media-source involved, and 2. queries from the query languages of the individual (nonS ...
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... need to make one more modification to that search query. If we leave the search query as it is, it will be true for everyone, as long as at least one client matched the criteria in the search query. Instead we need to narrow down the search for the specific device that is connecting. In order to do ...
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Chapter 5: Data Resource Management
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Open Database Connectivity

In computing, ODBC (Open Database Connectivity) is a standard programming language middleware API for accessing database management systems (DBMS). The designers of ODBC aimed to make it independent of database systems and operating systems. An application written using ODBC can be ported to other platforms, both on the client and server side, with few changes to the data access code.ODBC accomplishes DBMS independence by using an ODBC driver as a translation layer between the application and the DBMS. The application uses ODBC functions through an ODBC driver manager with which it is linked, and the driver passes the query to the DBMS. An ODBC driver can be thought of as analogous to a printer driver or other driver, providing a standard set of functions for the application to use, and implementing DBMS-specific functionality. An application that can use ODBC is referred to as ""ODBC-compliant"". Any ODBC-compliant application can access any DBMS for which a driver is installed. Drivers exist for all major DBMSs, many other data sources like address book systems and Microsoft Excel, and even for text or CSV files.ODBC was originally developed by Microsoft during the early 1990s, and became the basis for the Call Level Interface (CLI) standardized by SQL Access Group in the Unix and mainframe world. ODBC retained a number of features that were removed as part of the CLI effort. Full ODBC was later ported back to those platforms, and became a de facto standard considerably better known than CLI. The CLI remains similar to ODBC, and applications can be ported from one platform to the other with few changes.
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