Shelley Doll finishes her coverage of SQL data types with an overview of datetime and interval data types. Learn more about the basic syntax of these standard SQL types. Datetimes and intervals are ...

Please Note: Learners who successfully complete this IBM course can earn a skill badge — a detailed, verifiable and digital credential that profiles the knowledge and skills you’ve acquired in this ...

Learn how to master the SELECT statement to form truly useful data queries. This article explains functions, clauses, and keywords that will make your life a lot easier. Due to popular demand, we’re ...

Assuring optimal performance of database applications starts with coding properly formulated SQL. Poorly written SQL and application code is the cause of most performance problems. As much as 75% of ...

I always look forward to new research from Unisphere Research, a division of Information Today, Inc., publishers of this magazine and other great products for data professionals. The latest report ...

Maintaining and updating software is an important activity for a Technical Support role. There are many types of software, and understanding software can be overpowering. This course introduces the ...

In SQL Server, the database can be stored in different files and filegroups. If your database is small (100 MB or less), you do not need to worry too much about files and filegroups. But if you have a ...

The transaction log file contains the SQL Server transactions of the database. It basically records the database transactions and the changes made by the transactions to the database. The logs are ...

Overview NewSQL combines the consistency of SQL with the scalability of NoSQL to meet modern data needs.It offers faster query execution and real-time analytics ...

It’s a common mistake: a company puts a poorly performing database on larger and larger servers, throwing more and more money away while making the same mistakes, but the database never gets any ...