The most persistent struggle in data processing has been to ensure clean data. There are many ways that data can be incorrect and a database must check, as best it can, that the data is correct. The CHECK constraint is ideally suited for this sort of work, and the checking routine can become quite complex when dealing with check digits in data.
2011-04-28
3,328 reads
This article examines the difference between adding a nullable column to a table or a column with a default value.
2011-04-27
5,393 reads
In the second part of the Resource Monitor series we conclude with a look using the Memory tab and Disk tab to diagnose performance issues.
2011-04-26
4,198 reads
One of the most important responsibilities of a database administrator is to make sure that all the databases are backed up across environments managed by them. In my earlier article titled Importance of Database Backups and Recovery Plan I discussed the importance of a good database backup and recovery plan for all the user and system databases. In this article we will take a look at the steps which a database administrator needs to follow to backup and restore an analysis services database.
2011-04-25
3,172 reads
'Split, Sort & Collapse' is, happily, not a description of the intrepid Fabiano Amorim after his epic series of articles about the ShowPlan operators. With renewed stamina, Fabiano continues his mission to describe all the major operators by explaining the Trivial Plan and the power of unique indices.
2011-04-22
3,882 reads
Whilst getting some courseware ready I was playing around writing some code and I decided to very simply show when a window starts and ends based on you asking for a TumblingWindow of n time units in StreamInsight. I thought this was going to be a two second thing but what I found was something I haven’t yet found documented anywhere until now.
2011-04-21
2,346 reads
This article demonstrates how a DBA can check for policy compliance by leveraging the Policy Based Management Feature of SQL Server.
2011-04-20
2,820 reads
Windows Resource Monitor can be a very useful tool for initial diagnosis of performance issues. In this two part series we look at how to troubleshoot performance issues using Resource Monitor.
2011-04-19
3,686 reads
Whenever rows or columns are deleted from a table, SQL Server reuses space to accommodate new data. However, this is not the case when a variable length column is deleted. The space used by this type of column is not reclaimed automatically. Variable length columns can be of data types varchar, nvarchar, varchar(max), nvarchar(max), varbinary, varbinary(max), text, ntext, image, sql_variant, and xml. In this tip, I have tried to put forth a solution to reclaim this space and this should work for SQL 2005 and later versions.
2011-04-18
3,911 reads
The SQL-92 standard introduced the LEFT Outer Join operation which offers a powerful alternative to standard relational processing to perform full hierarchical processing naturally and inherently. This enables SQL to transparently integrate relational data with XML, IMS and other forms of legacy hierarchical data. This can also allow the so far overlooked integration of IMS and legacy data with the Internet and XML, and visa versa.
2011-04-15
3,437 reads
By Steve Jones
The greatest rewards come from working on something that nobody has words for. If...
By HeyMo0sh
Working in DevOps, I’ve seen FinOps do amazing things for cloud cost control, but...
Every organization I talk to has the same problem dressed up in different clothes....
Comments posted to this topic are about the item The day-to-day pressures of a...
Comments posted to this topic are about the item Creating a Simple and Flexible...
When thinking about the identity property and sequence objects, which of these can be used with numeric and decimal data types?
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