Featured Article: Alerts for when Login Failures Strike
When repeated SQL Server login failures occur, a DBA should investigate. It could just be someone repeatedly typing in the wrong password. Worst case is a virus attack flooding your network with connection requests. Receiving an e-mail while login failures are occurring allows DBAs to investigate and fix the issue as soon as possible. So how is DBA notified of login failures without flooding their inbox?
14 July 2008 -
Guest Authors -
0 Comments
Recent Articles
Last time, we discussed Table inheritance, which allowed us to easily reduce redundancies in our table design by creating "base" or "super" tables that contain columns and relations that "sub-tables" automatically inherit.
That generally works well, but what if you just want to have several entities share a relation, but no common attributes? That is, the entities are not really the same type, and a base class wouldn't make a lot of sense. For example, suppose you are modeling Employees and Offices, and both entities can have multiple phone numbers that you'd like to store. Is there a simple way to create a data model for that without the need for redundant tables and code?
19 May 2008 -
Jeff Smith -
11 Comments
I would like to share some interesting parameters I found for the undocumented extended stored procedure xp_ReadErrorLog. In doing some testing with this extended stored procedure I found four very interesting parameters. Adding to some of the articles already on the web that discuss undocumented stored procedures, in this article I will explain my testing, use and some examples of the procedure.
12 May 2008 -
Guest Authors -
5 Comments
ApexSQL is launching a new product called Enforce. As part of their launch they are giving away twenty-five copies to our members for participating in the forums. Read on for the details and to find out if you've already won.
7 May 2008 -
Bill Graziano -
10 Comments
One of the more obscure requirements that a developer may find themselves facing is the need to compare a row with its immediate sibling. One such case is when a list of values needs to be processed to produce a moving average or to smooth a sequence of statistical numbers where their order is important. For example, values lying along a time line. The solution is actually quite simple, but not immediately obvious.
2 April 2008 -
Paul Alcon -
20 Comments
SQL Server 2008 introduces a TIME data type which allows us to store the time without the date.
6 March 2008 -
Bill Graziano -
2 Comments
When designing a database, we sometimes come across situations where there are multiple types of entities that we are modeling, but we'd like them to all have certain attributes or relations in common. Using "sub-type" tables is a simple way to implement table inheritance in SQL Server.
20 February 2008 -
Jeff Smith -
28 Comments
Occasionally someone will ask for my help with a query and say that both a right outer join and a left outer join was tried, and still the expected results were not achieved. That made me realize that some developers do not completely understand outer joins and that an article explaining how to use them might help.
11 February 2008 -
Kathi Kellenberger -
9 Comments
