"I have a mind like a steel... uh... thingy." Patrick Logan's weblog.
Search This Blog
Thursday, January 08, 2004
Coordination via Databases
Jay Han responds to my item on using databases for coordination...
We know that databases provide concurrency control and transaction management. These features let applications share data -- you can call this coordination at low level. But what about coordination at high level? How can they exchange semantics of data? e.g. "9999-12-31 in date field means now? never? forever in the future?" or "20 point means 20 basis point." (Schemas and constraints can check syntax of data but not the "validity" of data.) Because I don't see how databases provide meaningful (hence ad-hoc) coordination, I don't quite understand Patrick's last sentence above especially the second half.
Databases have no advantage nor disadvantage in this respect (the "meaning" of data) to any other coordination mechanism.
Subscribe to:
Post Comments (Atom)
Blog Archive
-
2011
(19)
- 12/04 - 12/11 (2)
- 08/21 - 08/28 (5)
- 07/17 - 07/24 (1)
- 04/03 - 04/10 (3)
- 03/27 - 04/03 (5)
- 03/20 - 03/27 (1)
- 03/13 - 03/20 (1)
- 03/06 - 03/13 (1)
-
2010
(2)
- 11/07 - 11/14 (2)
-
2009
(40)
- 06/07 - 06/14 (2)
- 05/31 - 06/07 (1)
- 05/17 - 05/24 (1)
- 04/05 - 04/12 (2)
- 03/22 - 03/29 (7)
- 03/15 - 03/22 (1)
- 03/08 - 03/15 (4)
- 03/01 - 03/08 (2)
- 02/22 - 03/01 (1)
- 02/15 - 02/22 (5)
- 02/08 - 02/15 (1)
- 02/01 - 02/08 (7)
- 01/25 - 02/01 (2)
- 01/04 - 01/11 (4)
-
2008
(402)
- 12/28 - 01/04 (12)
- 12/14 - 12/21 (3)
- 12/07 - 12/14 (10)
- 11/30 - 12/07 (14)
- 11/23 - 11/30 (7)
- 11/16 - 11/23 (14)
- 11/09 - 11/16 (7)
- 11/02 - 11/09 (11)
- 10/26 - 11/02 (14)
- 10/19 - 10/26 (10)
- 10/12 - 10/19 (11)
- 10/05 - 10/12 (16)
- 09/28 - 10/05 (26)
- 09/21 - 09/28 (16)
- 09/14 - 09/21 (3)
- 09/07 - 09/14 (9)
- 08/31 - 09/07 (8)
- 08/24 - 08/31 (10)
- 08/17 - 08/24 (12)
- 08/10 - 08/17 (4)
- 08/03 - 08/10 (5)
- 07/27 - 08/03 (10)
- 07/20 - 07/27 (6)
- 07/13 - 07/20 (7)
- 07/06 - 07/13 (3)
- 06/29 - 07/06 (8)
- 06/22 - 06/29 (6)
- 06/15 - 06/22 (5)
- 06/08 - 06/15 (10)
- 06/01 - 06/08 (4)
- 05/25 - 06/01 (5)
- 05/18 - 05/25 (6)
- 05/11 - 05/18 (3)
- 05/04 - 05/11 (7)
- 04/27 - 05/04 (7)
- 04/20 - 04/27 (7)
- 04/13 - 04/20 (6)
- 04/06 - 04/13 (9)
- 03/30 - 04/06 (7)
- 03/23 - 03/30 (5)
- 03/16 - 03/23 (15)
- 03/09 - 03/16 (7)
- 03/02 - 03/09 (5)
- 02/24 - 03/02 (4)
- 02/17 - 02/24 (2)
- 02/10 - 02/17 (3)
- 02/03 - 02/10 (1)
- 01/27 - 02/03 (8)
- 01/20 - 01/27 (4)
- 01/13 - 01/20 (3)
- 01/06 - 01/13 (7)
-
2007
(388)
- 12/30 - 01/06 (11)
- 12/16 - 12/23 (5)
- 12/09 - 12/16 (3)
- 12/02 - 12/09 (5)
- 11/25 - 12/02 (5)
- 11/18 - 11/25 (4)
- 11/11 - 11/18 (4)
- 11/04 - 11/11 (11)
- 10/28 - 11/04 (11)
- 10/21 - 10/28 (3)
- 10/14 - 10/21 (6)
- 10/07 - 10/14 (5)
- 09/30 - 10/07 (18)
- 09/23 - 09/30 (13)
- 09/16 - 09/23 (9)
- 09/09 - 09/16 (12)
- 09/02 - 09/09 (15)
- 08/26 - 09/02 (2)
- 08/19 - 08/26 (8)
- 08/12 - 08/19 (25)
- 08/05 - 08/12 (7)
- 07/29 - 08/05 (8)
- 07/22 - 07/29 (2)
- 07/15 - 07/22 (4)
- 07/08 - 07/15 (11)
- 07/01 - 07/08 (3)
- 06/24 - 07/01 (8)
- 06/17 - 06/24 (4)
- 06/10 - 06/17 (17)
- 06/03 - 06/10 (6)
- 05/27 - 06/03 (12)
- 05/20 - 05/27 (5)
- 05/13 - 05/20 (15)
- 05/06 - 05/13 (10)
- 04/29 - 05/06 (14)
- 04/22 - 04/29 (5)
- 04/15 - 04/22 (6)
- 04/08 - 04/15 (16)
- 04/01 - 04/08 (8)
- 03/25 - 04/01 (5)
- 03/18 - 03/25 (3)
- 03/11 - 03/18 (3)
- 03/04 - 03/11 (5)
- 02/25 - 03/04 (1)
- 02/18 - 02/25 (4)
- 02/04 - 02/11 (10)
- 01/28 - 02/04 (11)
- 01/21 - 01/28 (2)
- 01/14 - 01/21 (1)
- 01/07 - 01/14 (7)
-
2006
(261)
- 12/31 - 01/07 (7)
- 12/24 - 12/31 (13)
- 12/17 - 12/24 (6)
- 12/10 - 12/17 (7)
- 12/03 - 12/10 (6)
- 11/26 - 12/03 (1)
- 11/19 - 11/26 (5)
- 11/05 - 11/12 (2)
- 10/29 - 11/05 (4)
- 10/22 - 10/29 (5)
- 10/15 - 10/22 (2)
- 10/08 - 10/15 (3)
- 10/01 - 10/08 (9)
- 09/24 - 10/01 (8)
- 09/17 - 09/24 (1)
- 09/10 - 09/17 (5)
- 09/03 - 09/10 (6)
- 08/27 - 09/03 (2)
- 08/13 - 08/20 (9)
- 08/06 - 08/13 (6)
- 07/30 - 08/06 (6)
- 07/23 - 07/30 (6)
- 07/16 - 07/23 (3)
- 07/09 - 07/16 (2)
- 07/02 - 07/09 (2)
- 06/25 - 07/02 (10)
- 06/18 - 06/25 (9)
- 06/11 - 06/18 (10)
- 06/04 - 06/11 (6)
- 05/28 - 06/04 (9)
- 05/21 - 05/28 (9)
- 05/14 - 05/21 (3)
- 05/07 - 05/14 (4)
- 04/30 - 05/07 (10)
- 04/23 - 04/30 (1)
- 04/16 - 04/23 (2)
- 04/09 - 04/16 (4)
- 04/02 - 04/09 (4)
- 03/19 - 03/26 (9)
- 03/12 - 03/19 (11)
- 03/05 - 03/12 (1)
- 02/26 - 03/05 (5)
- 02/19 - 02/26 (14)
- 02/12 - 02/19 (2)
- 02/05 - 02/12 (1)
- 01/29 - 02/05 (1)
- 01/22 - 01/29 (2)
- 01/01 - 01/08 (8)
-
2005
(335)
- 12/25 - 01/01 (9)
- 12/18 - 12/25 (4)
- 11/27 - 12/04 (1)
- 11/20 - 11/27 (1)
- 11/13 - 11/20 (1)
- 10/23 - 10/30 (1)
- 10/16 - 10/23 (2)
- 10/09 - 10/16 (3)
- 10/02 - 10/09 (11)
- 09/18 - 09/25 (4)
- 09/11 - 09/18 (4)
- 09/04 - 09/11 (1)
- 08/28 - 09/04 (7)
- 08/21 - 08/28 (10)
- 08/14 - 08/21 (6)
- 08/07 - 08/14 (2)
- 07/31 - 08/07 (16)
- 07/24 - 07/31 (5)
- 07/17 - 07/24 (6)
- 07/10 - 07/17 (5)
- 06/19 - 06/26 (1)
- 05/29 - 06/05 (7)
- 05/22 - 05/29 (7)
- 05/15 - 05/22 (16)
- 05/08 - 05/15 (10)
- 05/01 - 05/08 (8)
- 04/24 - 05/01 (6)
- 04/03 - 04/10 (7)
- 03/27 - 04/03 (19)
- 03/20 - 03/27 (15)
- 03/13 - 03/20 (27)
- 03/06 - 03/13 (7)
- 02/27 - 03/06 (16)
- 02/20 - 02/27 (7)
- 02/13 - 02/20 (10)
- 02/06 - 02/13 (23)
- 01/30 - 02/06 (4)
- 01/23 - 01/30 (12)
- 01/16 - 01/23 (15)
- 01/09 - 01/16 (2)
- 01/02 - 01/09 (17)
-
2004
(534)
- 12/26 - 01/02 (18)
- 12/19 - 12/26 (5)
- 12/12 - 12/19 (5)
- 12/05 - 12/12 (25)
- 11/28 - 12/05 (8)
- 11/21 - 11/28 (3)
- 11/14 - 11/21 (4)
- 11/07 - 11/14 (7)
- 10/31 - 11/07 (13)
- 10/24 - 10/31 (7)
- 10/17 - 10/24 (10)
- 10/10 - 10/17 (15)
- 10/03 - 10/10 (1)
- 09/19 - 09/26 (9)
- 09/12 - 09/19 (4)
- 09/05 - 09/12 (4)
- 08/29 - 09/05 (9)
- 08/08 - 08/15 (11)
- 08/01 - 08/08 (4)
- 07/11 - 07/18 (12)
- 07/04 - 07/11 (19)
- 06/27 - 07/04 (12)
- 06/20 - 06/27 (7)
- 06/13 - 06/20 (5)
- 06/06 - 06/13 (1)
- 05/30 - 06/06 (8)
- 05/23 - 05/30 (27)
- 05/16 - 05/23 (16)
- 05/09 - 05/16 (36)
- 05/02 - 05/09 (31)
- 04/25 - 05/02 (13)
- 04/18 - 04/25 (25)
- 04/11 - 04/18 (15)
- 03/28 - 04/04 (9)
- 03/21 - 03/28 (12)
- 03/14 - 03/21 (9)
- 03/07 - 03/14 (7)
- 02/29 - 03/07 (16)
- 02/22 - 02/29 (11)
- 02/15 - 02/22 (6)
- 02/08 - 02/15 (8)
- 02/01 - 02/08 (9)
- 01/25 - 02/01 (18)
- 01/18 - 01/25 (12)
- 01/11 - 01/18 (14)
-
01/04 - 01/11
(14)
- Register Allocation
- Data+Algorithms
- Coordination via Databases
- Edd Dumbill on XML and Databases
- BigCo Dynamics
- We *Have* Magic
- Will it be Cow Paths or Paved Roads?
- Keith Ray writes about multiple return values in...
- If only you believed in miracles, we'd get by
- Snow, Snow, and More... Freezing Rain???
- More Songs about Objects and Data (and Pattern Mat...
- Microsoft Business Framework
- Continuations: Python, Haystack
- Databases for coordination
-
2003
(286)
- 12/28 - 01/04 (7)
- 12/21 - 12/28 (10)
- 12/14 - 12/21 (5)
- 11/30 - 12/07 (5)
- 11/23 - 11/30 (5)
- 11/16 - 11/23 (2)
- 11/09 - 11/16 (3)
- 10/26 - 11/02 (6)
- 10/19 - 10/26 (9)
- 10/12 - 10/19 (8)
- 10/05 - 10/12 (5)
- 09/28 - 10/05 (3)
- 09/21 - 09/28 (3)
- 09/14 - 09/21 (4)
- 09/07 - 09/14 (3)
- 08/31 - 09/07 (6)
- 08/24 - 08/31 (12)
- 08/17 - 08/24 (3)
- 08/10 - 08/17 (6)
- 08/03 - 08/10 (8)
- 07/27 - 08/03 (9)
- 07/20 - 07/27 (5)
- 07/13 - 07/20 (8)
- 07/06 - 07/13 (15)
- 06/29 - 07/06 (12)
- 06/22 - 06/29 (5)
- 06/15 - 06/22 (6)
- 06/08 - 06/15 (1)
- 06/01 - 06/08 (5)
- 05/18 - 05/25 (7)
- 05/11 - 05/18 (9)
- 05/04 - 05/11 (13)
- 04/27 - 05/04 (9)
- 04/20 - 04/27 (4)
- 04/13 - 04/20 (10)
- 04/06 - 04/13 (15)
- 03/30 - 04/06 (7)
- 03/23 - 03/30 (13)
- 03/16 - 03/23 (9)
- 03/09 - 03/16 (3)
- 03/02 - 03/09 (8)
About Me
- Patrick Logan
- Portland, Oregon, United States
- I'm usually writing from my favorite location on the planet, the pacific northwest of the u.s. I write for myself only and unless otherwise specified my posts here should not be taken as representing an official position of my employer. Contact me at my gee mail account, username patrickdlogan.
No comments:
Post a Comment