(David Fells) This article explains what polymorphism is and how it applies to object oriented design in particular. It also explains the pros and cons of polymorphism when working with certain versions of PHP.
Other News
FIX: You may receive incorrect results when you run a Transact-SQL query in SQL Server 2000
When you run a Transact-SQL query in Microsoft SQL Server 2000, you may receive incorrect results. You experience this problem when all the following conditions are true: • The query contains an inner join that has a one-to-one key relationship. • The query contains an aggregate expression or a
SQL Performance: Use STATISTICS
(george.p.alexander) Sometimes overlooked and innocently missed during the development phase of a project is the existence of poor SQL queries. There can be various excuses for getting poor performance queries. But it won’t be unusual if you find somewhere during the programming life that end users
Normalization for dummies
(Samuel Isaac) Most database designers probably don’t set out trying to “normalize their database”. They just come out with this nice, logical design that happens to be normalized (usually up to the 3rd Normal Form) though that wasn’t the primary goal. The primary goal is usually performance.
How Powerful Is Your StAX Parser?
(Anghel Leonard) This tip is a simple application that demonstrates the possibilities of your StAX parser by setting the XMLInputFactory properties to true/false. The StAX parser tested in this example is the BEA and JCP parser.
Forrester Report – Oracle RAC Gains Momentum
In the past year, Forrester has interviewed 35 Oracle customers using Oracle Real Application Clusters (RAC) to find out about their implementation. Most customers stated that RAC met or exceeded their high-availability requirements to support mission-critical database applications. (R)
ASP.NET Validation Control – A Closer View
(chandan_is) Validation is an important part of any web application. Validation control is one of the best features that the .Net Environment provides. The era of writing big, time-consuming codes for validating user inputs is now a thing of the past. The drag-n-drop feature of validation control sa
Configuring RHEL/Centos 4.2 Server for Oracle RAC 10g R2 Readiness
(Tarry Singh) In part 7 of this series, we started a detailed explanation of setting up a RHEL 4.2 or Centos 4.2 OS. This article works towards our goal by configuring the Network and Linux servers for Oracle readiness. In addition, we will take a brief look at Vmware Virtual Center.
Data Joins
When studying relationships, we reviewed techniques of making data from one table available to the records of another table. This demonstrated to reduce data duplication and mistakes. Another issue that involves the combination of tables consists of creating records from more than one table and maki
SSIS: SELECT *… or select from a dropdown in an OLE DB Source component?
(Jamie Thomson) The OLE DB Source component allows a number of methods for extracting data from an OLE DB Source. The two most obvious are: 1) Write a SQL statement to extract data 2) Select a required table from a drop down box.