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IBM Research - Almaden
Data Links

Past Project
Data Links is cool, new IBM technology that represents the next generation of enterprise content management. Now available as a part of IBM's DB2 Universal Database, Data Links allows management of files that reside outside the database as though they are logically within the database.

Simpler file administration and data in files no longer needs to be imported into the database.
Data Links guarantees referential integrity to these external files, provides enhanced access control to them, and supports automatic and coordinated backup and restore capability within transactional environments that are crucial for data management. It simplifies and reduces system administration costs and complexities, by providing a single coordinated administration point for file and database data.

Enterprises can now manage files on multiple distinct file servers within Data Links Databases, allowing robust centralized control over distributed resources across intranets. Data in files no longer needs to be imported into the database, and can continue to be accessed directly by applications.

Data Links technology has recently been extended to include distributed file systems in clustered intranet environments with support for DFS, thereby enabling the management of large file repositories in a scalable way across an enterprise.

We have also extended IBM's DPROPR replication offering to support datalinked files in DB2 UDB Version 7. Database data and datalinked files can now be replicated together in an atomic and consistent manner. This brings integrated and effective load balancing and high availability opportunities to applications involving databases and external file references.

Both ANSI and ISO have accepted the proposal for SQL Part 9: Management of External Data (SQL/MED), which includes the specification of the DATALINK type. ISO has progressed SQL/MED from working draft to final committee draft (FCD) in November 1999. If things go according to schedule, it should become a standard in late 2000.

The Data Links technology was invented at Almaden Computer Science, the hub for innovation in database technology.

More about Data Links:
General Overview FAQ
DB2 UDB Information

List of Almaden Projects

Resources
PDF Files
pdf icon DLFM: A Transactional Resource Manager (pdf, 107KB)
pdf icon Data Links: Managing External Data with DB2 Universal Database (pdf, 81.5KB)
pdf icon IBM UDB and Dassault Systèmes: A Partnership to your Advantage (pdf, 131KB)
pdf icon DB2 UDB (NT, Unix, AS/400) Data Links Technology & Solutions for the e-business World (pdf, 591KB)
pdf icon Data Links: Manage Enterprise Content (pdf, 2596KB)
 
Articles and Press Releases
Link to site outside of IBM Controlling the Digital Deluge: IBM Content Manager
Link to site outside of IBM Inside DB2 Data Links Manager
Link to site outside of IBM A Distributed Scientific Data Archive Using the Web, XML and SQL/MED
Link to site outside of IBM New release puts a shine on DB2 Enterprise Edition Sept. 13, 1999
Link to site outside of IBM IBM's DB2 update sharpens competition with rivals Sept. 6, 1999
Link to site outside of IBM DB2 hits its stride: IBM gains ground on favorite Oracle May 24, 1999
Link to site outside of IBM IBM Updates DB2 Universal Database Sept. 24, 1998
Link to site outside of IBM IBM advances DB2 on multiple platforms Sept. 19, 1998
Link to site outside of IBM IBM to dish up meatier DB2 version July 27, 1998
Link to site outside of IBM IBM bulking up DB2 feature set July 20, 1998

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