Description:
Discussing advances in database technology.
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What would be a truly relational operating system ?
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The current hypes about operating systems (Windows, Unix, Mac OS Linux) gave to think about how RM main principles could be implemented to extend the possibility of having a TRDBMS being implemented at a lower physical layer (I mean on current disks, RAM, and CPU architectures). That said, I am curious onto which prerequisites... more »
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CFP: ASONAM 2010
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ASONAM 2010 - CALL FOR PAPERS (A printable typeset version of a more extensive CfP can be found at <[link]>.) The 2010 International Conference on Advanced in Social Network Analysis and Data Mining. [link] Following the great success of ASONAM09 in Athens (20-22 July 2009),... more »
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Codd's Information Principle
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I can't remember where in his papers Codd stated the Information Principle but here's a version of a quote by Date: "The entire information content of a relational database is represented in one and only one way: namely, as attribute values within tuples within relations." Recently there has been mention of logical connectors being implicit in... more »
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Adding history/versioning to a Nested Set model (is it possible?)
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Hi All, I'm trying to implement a tree structure, hence I'd like the Nested Set model, but I need to be able to record the history of the tree structure *somehow* so that I can access previous versions. I've searched up and down online but all I can find are transactions +rollbacks. As far as I can see...... more »
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multilevel modelling and constraints
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I just realized that, for a number of years already, I've continuously been bumping into something that could perhaps be generalized into a bona fide data modelling (problem?) pattern. Bear with me... As an example, think about a generalization hierarchy where we have a) a bunch of organizations at a higher level, and b) also the... more »
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foreign key constraint versus referential integrity constraint
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I'm trying to understand the relationship between referential integrity and foreign key constraints. My example is suppose we have the ubiquitous supplier who sends the usual Orders with the usual info but also includes a Coupon that can be redeemed on future Orders: Orders { OrderID, CustomerID, ... usual stuff ..., CouponID }... more »
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Join .Net Community
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Join .Net Community This group represents the Microsoft .Net community. All .net programmers all around the world are welcome here. In this group you'll find the latest releases of .Net related products, frameworks, Upgradation, technologies, IDEs etc. You also can share your experiences and problems you are facing. You can discuses about... more »
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