With most Excel spreadsheets, you enter data manually into cells and then use formulas or other functions to analyze it or perform calculations. If you have a large data source, such as an Access ...

The structured query language is a powerful tool for connecting to many database systems that store data in tables organized into rows and columns. It's often used on the backend of business websites ...

Why it matters: Security researchers have uncovered a major vulnerability that could have allowed anyone to bypass airport security and even access airplane cockpits. The flaw was found in the login ...

A common SQL habit is to use SELECT * on a query, because it’s tedious to list all the columns you need. Plus, sometimes those columns may change over time, so why not just do things the easy way? But ...

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

Sometimes you want to render a visual on the fly, or even animate it. Perhaps the visual is a complex path where the set of x,y coordinates dictate what to render. Or perhaps the visual is a graph ...

Errors that allow SQL injection and cross-site scripting attacks are still the top vulnerabilities that pen-testers find, especially at smaller companies. Despite years topping vulnerability lists, ...

Information is stored somewhere. Sometimes it’s not suited for its original location. If you’re running low on disk space, added a new drive array, or just curious; this is a simple procedure to move ...