=====Data custodian=====

===Definition===
A data custodian is an IT [[general_term:role|role]] responsible for the structure of data fields, including database structures and models, and for management of the technical environment of data maintenance and storage.

===Synonyms===
Common job titles for data custodians are database administrator (DBA), data modeler and ETL developer [2].

===Notes===
People usually get confused between the roles of [[role/data_steward|data stewards]] and data custodians. The simplest difference between these roles is that a [[role/data_steward|data stewards]] is responsible for the data content, context, and associated business rules, while a data custodian is responsible for the structure of those data fields including database structures and models [2][4].

The data custodian is seen as an IT role [1][6]. A data custodian manages the technical environment of data maintenance and storage [5]. The custodian is maintaining the data on IT systems in accordance with business requirements [5][7]. A data custodian deals with the movement (ETL), security, and storage of data [8].

A data custodian is responsible for: [2]
  * Accessing data is authorized and controlled.
  * Identifying Data Stewards for each data set.
  * Sustaining data integrity with technical processes.
  * Performing processes for data quality issue resolution in partnership with data stewards.
  * Protecting data with technical controls.
  * Checking if added data to data sets are consistent with the common data model.
  * Maintaining versions of master data along with the history of changes.
  * Applying change management practices to database maintenance.
  * Auditing data content and changes.

===Relations===
|Data custodian| is an instance of a |[[role/data_management_role|data management role]]|

===References===

[1] DAMA (2017). DAMA-DMBOK. Data Management Body of Knowledge. 2nd Edition. Technics PublicationsLlc. August 2017.

[2] Data custodian. (2010, 1 augustus). Wikipedia. Geraadpleegd op 10 juli 2022, van https://en.wikipedia.org/wiki/Data_custodian

[3] Data Quality Management: Roles, Processes, Tools. (2019, 17 oktober). Altexsoft. Geraadpleegd op 1 juli 2022, van https://www.altexsoft.com/blog/data-quality-management-and-tools/

[4] Ziad, Z. (2022, 23 februari). Building a Data Quality Team: Roles and Responsibilities to Consider. Data Ladder. Geraadpleegd op 3 juli 2022, van https://dataladder.com/building-a-data-quality-team-roles-and-responsibilities-to-consider/

[5] Zatyko, S. (2015, 17 juni). Building a data quality team. Experian. Geraadpleegd op 3 juli 2022, van https://www.edq.com/blog/building-a-dq-team/

[6] Askham, N. (2021a, mei 28). What is Data Custodianship? Nicola Askham the data governance coach. Geraadpleegd op 1 juli 2022, van https://www.nicolaaskham.com/blog/2021/5/25/what-is-data-custodianship

[7] Askham, N. (2021b, augustus 13). What you need to know about Data Governance roles and responsibilities. LinedIn. Geraadpleegd op 4 juli 2022, van https://www.linkedin.com/pulse/what-you-need-know-data-governance-roles-nicola-askham/?trackingId=Le3x8dXmRxWhs7Ibw1LZig%3D%3D

[8] Data Governance Roles and Responsibilities: The Complete List. (2022, 10 maart). Atlan. Geraadpleegd op 3 juli 2022, van https://atlan.com/data-governance-roles-and-responsibilities/


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