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SIX RDD 3 for CA-Clipper 5.2


Legacy SIX Replaceable Data Driver (RDD) for CA-Clipper 5.2 provides faster, more powerful and more reliable DBF database management


SIX RDD for CA-Clipper 5.2 is a Replaceable Database Driver (RDD) for CA-Clipper 5.2 that replaces the default NTX/DBT index and memo driver with an NSX/SMT driver that features a smaller single-file index footprint, more functionality and faster performance.

Compatible with Apollo

Setting Apollo to run in Machine Mode is fully compatible with SIx RDD Driver 3.02. That means record locking, file locking, table updating, memo fields and indexes are properly managed between DOS-based CA-Clipper 5.2 applications using SIx and Windows applications developed using Apollo. A CA-Clipper/SIX application can lock a record in DOS and that lock will be respected by all Apollo Windows applications. Note that SIx cannot connect to the Apollo Server.


The SuccessWare Index Driver (SIx Driver) is the first Replaceable Database Driver (RDD) for CA-Clipper and maintains its place in history as the leader in CA-Clipper RDD technology. The SIx Driver introduced FoxPro tables, memos, and indexes to the world of CA-Clipper 5.0 developers. Later, the new HiPer-SIx format (short for "High-Performance SIx Driver") even further improved on the "small and fast" SIx Driver tradition with its .SMT memos and .NSX index formats. SIx Driver RDD includes support for both CA-Clipper 5.2 U.S. and International Editions.

The SIx Driver achieved staggering popularity that triggered Computer Associates to license a subset of the SIx Driver and include it with CA-Clipper 5.2. While the SIx Driver was never updated to work under CA-Clipper 5.3 (since many Clipper developers did not move to CA-Clipper 5.3), it remains one of the world's most popular Clipper 5.2 add-ons.


The final release of the SIx Driver is 3.02 and it was released on October 25th, 1996. This 3.02 version is very mature and very stable. SIx is no longer under development, and technical support is not provided, however it is still available for purchase by those developers who require it for their ongoing CA-Clipper 5.2x legacy development.

CA-Clipper 5.3, xBase and Harbour Users

The SIx RDD Driver was designed for, and tested with CA-Clipper 5.2 only. We do not recommend using SIx with CA-Clipper 5.3, xBase++ or Harbour because it was not designed for, nor tested with these products.

Y2K Compliant

The SIx Driver 3.02 is fully Y2K-compliant, so you can feel secure updating your Clipper/SIx projects that your programs will operate correctly with respect to date storage and manipulation.

Special Offer!

The legendary, high-speed HiPer-SIx RDD Driver 3.02 for CA-Clipper 5.2x is available for only $399 for both the U.S. and International Editions of CA-Clipper 5.2. Join the tens of thousands of users worldwide that use SIx RDD to build powerful CA-Clipper applications. This version is much faster and more powerful than the stripped down, limited edition that was included with CA-Clipper 5.2. Click here to buy now securely online:

Buy SIx RDD now


Key Features

  • Supports both U.S. and International editions of CA-Clipper 5.2x
  • Small footprint
  • Single and multi-user support
  • 100% compatible with applications developed with Apollo, including simultaneous record and file locking
  • Supports FoxPro and HiPer-SIx tables, memos, and index formats and NTX support
  • Memo packing
  • Adjustable FPT/SMT memo block size for better peformance
  • Integrated high-speed Mach SIx query optimizer provides ultra fast optimization on SET FILTER and other selected commands
  • VariField™ support allows you to store and retrieve variable length data in memo fields, including arrays
  • Sub-Indexes allow you to build indexes within an index
  • Roll-Your-Own indexes (RYO) for powerful runtime custom indexing
  • Multi-Key, Free-Format indexes unique to SIx Driver
  • HiPer-Seek integrated Fast Text Search technology for high-speed searching of text within memo fields
  • Database Event Triggers allows you to attach a trigger to various database operations or events
  • Data encryption/decryption support
  • Record edit rollbacks
  • Y2K Compliant
  • Royalty free distribution

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