Browse Definitions:
Definition

column-level encryption

Contributor(s): Stan Gibilisco

Column-level encryption is a method of database encryption in which the information in every cell (or data field) in a particular column has the same password for access, reading, and writing purposes. 

Column-level encryption is not the only method for database encryption. Other methods include:

  • Row-level encryption, in which each row has a unique password for all of its cells.
  • Cell-level encryption, in which each individual cell has its own unique password.
  • Tablespace-level encryption, in which each tablespace has a unique password for all of its contents.
  • File-level encryption, in which individual files are encrypted in blocks according to predetermined criteria.

Advantages of column-level encryption, relative to other encryption methods, include widespread use (so most database administrators are familiar with it), and the ability to simultaneously protect columns in databases that exist in different platforms. Disadvantages include reduced or limited available query optimization functions, increased data file size, increased demands on system resources, and an increased number of potential security holes (because more frequent changes must be made on a continuing basis).

This was last updated in March 2013

Continue Reading About column-level encryption

Start the conversation

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • internal audit (IA)

    An internal audit (IA) is an organizational initiative to monitor and analyze its own business operations in order to determine ...

  • pure risk (absolute risk)

    Pure risk, also called absolute risk, is a category of threat that is beyond human control and has only one possible outcome if ...

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

SearchSecurity

  • principle of least privilege (POLP)

    The principle of least privilege (POLP), an important concept in computer security, is the practice of limiting access rights for...

  • identity management (ID management)

    Identity management (ID management) is the organizational process for identifying, authenticating and authorizing individuals or ...

  • zero-day (computer)

    A zero-day vulnerability, also known as a computer zero day, is a flaw in software, hardware or firmware that is unknown to the ...

SearchHealthIT

SearchDisasterRecovery

  • business continuity and disaster recovery (BCDR)

    Business continuity and disaster recovery (BCDR) are closely related practices that describe an organization's preparation for ...

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

  • call tree

    A call tree -- sometimes referred to as a phone tree -- is a telecommunications chain for notifying specific individuals of an ...

SearchStorage

SearchSolidStateStorage

  • hybrid hard disk drive (HDD)

    A hybrid hard disk drive is an electromechanical spinning hard disk that contains some amount of NAND Flash memory.

Close