There is a popular design for a database that requires a built-in audit-trail of amendments and additions, where data is never deleted, but superseded by a later version. Whilst this is conceptually simple, it has always made reporting the latest version of data complicated. Alex Kuznetsov joins the debate on the best way of doing this with an example using an indexed view and the filtered index.
2011-07-15
3,274 reads
We're pretty confident that we have locked down and encrypted our financial data, but a lot of our customer's PII (Personally Identifiable Information) data is still held in unencrypted form. This data is able to be selected directly by read only business users on many of our downstream reporting, datawarehouse and standby servers. The rise of identity theft makes protecting this data imperative. DBAs are the custodians of this information and must protect it like we protect our own personal information. Recent publicity over the theft of Sony PSN data underscores both the economic and ethical importance of protecting personal data.
2011-07-14
2,864 reads
Fabiano Amorim was asked a couple of questions about SQL Server Distribution Statistics. Having given an answer based on his current knowledge, he then decided to find out for himself whether what he'd said was right, and started an epic journey of exploration into Distribution Statistics and the way that the Query Optimiser uses them.
2011-07-13
2,132 reads
Fabiano Amorim was asked a couple of questions about SQL Server Distribution Statistics. Having given an answer based on his current knowledge, he then decided to find out for himself whether what he'd said was right, and started an epic journey of exploration into Distribution Statistics and the way that the Query Optimiser uses them.
2011-07-12
2,173 reads
The Replication infrastructure in SQL Server is implemented using SQL Server Agent to execute the various components involved in the form of a job (e.g. LogReader agent job, Distribution agent job, Merge agent job) SQL Server jobs execute a binary executable file which is basically C++ code.
2011-07-11
3,267 reads
The basic texts for developing SQL code tend to leave unsaid the basic techniques for building routines such as stored procedures in TSQL. Phil Factor is well-known for his more lengthy and complex stored procedures, so we asked him to explain in more detail how he goes about developing things without the comfort of Visual Studio.
2011-07-08
3,997 reads
Table Value Constructors (TVCs) are a useful feature of 2008, allowing you to specify tables of values and expressions. Users who are stuck with previous versions of SQL Server can play along, since Rob Sheldon demonstrates that there have always been ways of doing this in SQL Server, though less elegantly.
2011-07-07
3,929 reads
Recently I came across with an article on DB2 about using Union instead of OR. So I thought of carrying out a research on SQL Server on what scenarios UNION is optimal in and which scenarios OR would be best. I will analyze this with a few scenarios using samples taken from the AdventureWorks database
2011-07-06
6,349 reads
Indexes speed retrieval of rows from database tables or views. Here are the top index-related T-SQL statements that SQL Server DBAs should know.
2011-07-05
8,937 reads
It is recommended that you remove all special characters and HTML formatting. This task can be handled in TSQL code, however in this case I have the opportunity to use .NET and the power of the regular expressions to manage the string. In this tip, I'll build a CLR function which cleans up a string of HTML tags and special characters. I'll use Visual Studio 2010 with C# as the programming language. Check out this tip for my solution.
2011-07-04
3,902 reads
2025 exposed a growing gap between AI ambition and operational reality. As budgets tightened...
By John
When organizations migrate workloads to Azure, the focus is usually on architecture, performance, and...
By Brian Kelley
There's a great article from MIT Technology Review about resetting on the hype of...
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I am using ssrs in visual studio 2022, I work on a report, there...
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