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Featured Database Articles

Feature Database Articles

MS SQL

How Many Databases Can You Name? 05/11/2020

There is a huge number of databases available. How many could you name? Create our list and then compare to our list of well over 100 databases!

How to Find the Estimation Cost for a Query 05/04/2020

Discover how to estimate the cost of a query. Read on to see an example of how to extract the Estimated Cost for execution plans stored in the procedure cache.  

Understanding Views in SQL 04/27/2020

Learn about the concept of views in SQL, and how they work. Read on to see clear examples of how to implement views.

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Oracle

Is COUNT(rowid) Faster Than COUNT(*)? 05/18/2020

It is believed that count(*) expands to all columns and that count(rowid) is faster.  Read on to see why the opposite might be true.

Understanding Views in SQL 04/27/2020

Learn about the concept of views in SQL, and how they work. Read on to see clear examples of how to implement views.

A Look at the Oracle Group-by Bug 04/13/2020

In Oracle 12.2 and later a group-by elimination enhancement can produce wrong results. Read on to see what can be returned and how to work around it.

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MS Access

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DB2

Understanding Views in SQL 04/27/2020

Learn about the concept of views in SQL, and how they work. Read on to see clear examples of how to implement views.

How do OODBMS and ORDBMS Differ from RDBMS? 02/10/2020

Get a high-level understanding of how object-relational and object-oriented database management systems differ from traditional relational database management systems.

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