STAC Bi-Temporal Data SIG

Bi-temporal data (or BTD) are data for which changes are recorded over two independent dimensions of time. These dimensions are referred to as "valid time" and "transaction time," where valid time denotes the period during which a fact is true with respect to the real world and transaction time denotes the period during which a fact is stored in a database. Trading firms use BTD in applications ranging from risk management and back-testing of trading strategies to P&L Explain and regulatory reporting.

For more background on BTD, see the slides and video from presentations given by Bank of America Merrill Lynch and Bitemporaldata.com at the June STAC Analytics Technology Conference on current issues in bi-temporal data.

Background on the STAC BTD SIG

The STAC Bi-Temporal Data Special Interest Group (BTD SIG) is a group of end-user organizations and vendors that will meet periodically to discuss key issues related to BTD.

See this FAQ for eligibility requirements and other details.

The initial kickoff telecon was held on October 7, 2011. Slides and replay of the call are here.

The first in-person meetings were held in New York (Nov 2, 2011) and London (Nov 9, 20011). These were end-user only meetings.

Two streams are now active:

1. an information stream, where the focus is presentations by industry leaders, product education, and other information sharing
2. a benchmark-development stream, where the focus is specifying benchmarks involving BTD workloads.

Each of these streams meets once per month by telecon.