A good database design is important in ensuring consistent data, elimination of data redundancy, efficient execution of queries and high performance application. Taking the time to design a database saves time and frustr... More »

Advantages of a compiler in software coding include better error detection mechanisms, higher performance in terms of execution and enhanced optimization for specific hardware. Compilers also improve security for profess... More »

Data integrity testing refers to a manual or automated process used by database administrators to verify the accuracy, quality and functionality of data stored in databases or data warehouses. This test is regularly done... More »

Data redundancy can cause data anomalies in a database - most commonly insertion, deletion and update errors. The process of data normalization helps to eliminate data redundancy and its resultant anomalies. More »

A spreadsheet is used to keep track of data and do calculations, while a database is used to store information to be manipulated at a later time. Information might start out stored on a spreadsheet, but as the amount of ... More »

A query retrieves data from an Access database. Even though queries for Microsoft Access are written in Structured Query Language, it is not necessary to know SQL to create an Access query. The Query by Example screen al... More »

A database is a collection of data that can be stored and retrieved, while a data warehouse is a collection of integrated information that can be analyzed quickly and efficiently. A data warehouse is a special type of da... More »