(1) Also referred to as data scrubbing, the act of detecting and removing and/or correcting a database��s dirty data (i.e., data that is incorrect, out-of-date, redundant, incomplete, or formatted incorrectly). The goal of data cleansing is not just to clean up the data in a database but also to bring consistency to different sets of data that have been merged from separate databases. Sophisticated software applications are available to clean a database��s data using algorithms, rules and look-up tables, a task that was once done manually and therefore still subject to human error.
(2) In a RAID system, the act of correcting parity bit errors so that drives remain synchronized.
- Data Compression
Storing data in a format that requires less space than usual. Data compression is particularly useful in communications because it enables devices to transmit or store the same amount of data in fewer bits. There are a variety of data compression techniques, but only a few have been standardized. The CCITT has defined a standard […]
- data custodian
In e-discovery terminology, the data custodian is usually the person responsible for, or the person with administrative control over, granting access to an organization’s documents or electronic files while protecting the data as defined by the organization’s security policy or its standard IT practices.
- Data Deduplication
Data deduplication is a technique for reducing the amount of storage space an organization needs to save its data. In most organizations, the storage systems contain duplicate copies of many pieces of data. For example, the same file may be saved in several different places by different users, or two or more files that aren’t […]
- Data Dictionary
In database management systems, a file that defines the basic organization of a database. A data dictionary contains a list of all files in the database, the number of records in each file, and the names and types of each field. Most database management systems keep the data dictionary hidden from users to prevent them […]
- data flow model
Data flow model is a graphical representation produced by data flow modeling. Also referred to as a data flow diagram (DFD).