What is meant by client/server architecture in fundamentals of Database systems? I didn't get any proper answer from google. It will be better for me ...
I have a table Customers with Millions of Records on 701 attributes ( columns ). I receive a csv file that has one row and 700 columns. Now on the bas ...
Just found out that Oracle does not like it when you use the AS keyword to alias a subquery: I need to keep my SQL queries as portable as possible. ...
I only have MySQL installed right now but will these work fine when run in PgSQL, MS SQL, etc.? ...
Sorry for the ignorant question, but what kind of applications wouldn't require an ACID compliant database server? I have a SQL Server background wher ...
I am migrating data from one database schema to another. The old schema has a categorization system based on an adjacency list, with id, category, and ...
The possibility of this happening seems extremely unlikely to me because of the problems it could cause, but I figured I'd ask the question anyway... ...
a) I have 1000000 domain names b) Every domain has about 100000 sites c) each site has about 10000 visits daily / (5000 unique visits daily) d) As ...
Say I have a table X with 100 records in it and that running a select * from X takes 100 seconds. How long should I expect the query select top 10 * ...
I have a stored procedure that goes something like this (pseudo code) All ran well for a long time. Suddenly, the query started running forever if ...
Can we get a list of basic optimization techniques going (anything from modeling to querying, creating indexes, views to query optimization). It would ...
I'm working on a web app for a quality control checklist. I already have a table set up, but I have a hunch that our model is sub-optimal and I could ...
I want to retrieve all records from one table when there are no matches in the second table. So it is kind of the opposite of an inner join. ...
This are few of the fundamental database questions which has always given me trouble. I have tried using google and wiki but I somehow I miss out on u ...
You often see database fields set to have a magnitude of 255 characters, what is the traditional / historic reason why? I assume it's something to do ...
This question is related to this post: SQL design for survey with answers of different data types I have a survey app where most questions have a set ...
I am working on an online survey. Most questions have a scale of 1-5 for an answer. If we need to add a question to the survey, I use a simple web for ...
I often see people who write SQL like this: I myself write simply: To me the "OUTER" keyword is like line noise - it adds no additional informat ...
Yesterday while working on a project I came up on a peculiar 1:1 relationship which left me wondering - how to best implement this (clearly, we had do ...
In SQL Server 2005 I just struck the infamous error message: Introducing FOREIGN KEY constraint XXX on table YYY may cause cycles or multiple cas ...