There is a product-feature matrix. It has thousands rows (products) and hundreds features. It has binary values that show if the product has this feature or not. So it could be a table of 40 000 rows
I\'m curious as to what the major pros/cons are of开发者_运维百科 using an object relational database over a regular relational database are?
Searched google for \"firebird update duplicates\" and \"firebird handle duplicate update\" but did not get any stuff, that would solve my question; so i thought it would be a good idea to use this ma
I think one of the advantages of no-sql such as MongoDB is that it can scale horizontally automatically: just add a cheap machine and the data can \"spread over\" to the new machine.
I\'m making a site to document browser bugs where users can submit a bug and users can submit solutions/workarounds to these bugs. I\'ll have stuff like:
I Am trying to learn the RDBMS. I have question for you guys. Why does a DBMS interleave t开发者_如何学JAVAhe actions of the different transactions instead of executing transactions one after another?
I think with SQLite3, at least it doesn\'t keep any cached page because there is no server and each write will exit SQLite3, so it can\'t do any caching directly.
I have the following db-schema . FILE, GROUP and BLOCK represent the object structure of the XML file.
In designing RDBM开发者_如何转开发S schema, I wonder if there is formal principle of concrete objects: for example, if it is Persons table, then each record is very concrete and unique.Each record in
Simple question, could I conceivably use redis instead of mysql for all sorts of web applications: 开发者_如何学Pythonsocial networks, geo-location services etc?Nothing is impossible in IT. But some t
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