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.

Please create a username to comment.

SearchCompliance

  • risk assessment

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

  • PCI DSS (Payment Card Industry Data Security Standard)

    The Payment Card Industry Data Security Standard (PCI DSS) is a widely accepted set of policies and procedures intended to ...

  • risk management

    Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.

SearchSecurity

SearchHealthIT

SearchDisasterRecovery

  • call tree

    A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

  • Disaster Recovery as a Service (DRaaS)

    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

  • cloud disaster recovery (cloud DR)

    Cloud disaster recovery (cloud DR) is a combination of strategies and services intended to back up data, applications and other ...

SearchStorage

Close