Product Documentation

FairCom ISAM for C

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c-treeDB Multi-Record "Virtual" Tables

A common technique in many early applications was to combine multiple types of records into a single physical data file. Many of those applications have been very successful for many years and are still in service. This technique was a common practice when storage space was at a premium. However, this technique does not conform to the standard, single-schema, relational model necessary for SQL access.

Developers are looking at adding more complex features and interoperability over their data with new technologies such as web access and Windows .NET support. This has proven to be a challenge when the data is not of a consistent schema due to multiple record types in a single table.

FairCom DB allows a single table with multiple schemas (multiple record types) to appear to SQL as multiple virtual tables, each with a single schema.

For information about multi-record tables, see the c-treeDB Developer's Guide.