57 lines
3.1 KiB
Markdown
57 lines
3.1 KiB
Markdown
---
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layout: article
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title: Data Validation
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description: Quality in, Quality out! Enforce data quality checks at the point of SAS data entry, both directly via the web interface and also via Excel uploads.
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og_image: https://i.imgur.com/P64ijBB.png
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---
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# Data Controller for SAS® - DQ Validations
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## Overview
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Quality in, Quality out! Data Controller lets you enforce quality checks at the point of data entry, both directly via the web interface and also via Excel uploads.
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## Default Checks
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By default, the following frontend rules are always applied:
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* Length checking per target table variable lengths
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* Type checking per target table datatypes (Character, Numeric, Date, Time, Datetime)
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* Not Null check per target table constraints
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* Primary Key checking per business key defined in MPE_TABLES
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It is possible to configure a number of other rules by updating the MPE_VALIDATIONS table. Simply set the `BASE_LIB`, `BASE_DS` and `BASE_COL` values, and ensure `RULE_ACTIVE=1` for it to be applied.
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## Configurable Checks
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Check back frequently as we plan to keep growing this list of checks.
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|Rule Type|Example Value |Description|
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|---|---|---|
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|CASE|UPCASE|Will enforce the case of cell values. Valid values: UPCASE, LOWCASE, PROPCASE|
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|NOTNULL|(defaultval)|Will prevent submission if null values are present. Optional - provide a default value.|
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|MINVAL|1|Defines a minimum value for a numeric cell|
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|MAXVAL|1000000|Defines a maximum value for a numeric cell|
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|HARDSELECT|sashelp.class.name|A distinct list of values (max 1000) are taken from this library.member.column reference, and the value **must** be in this list. This list may be supplemented by entries in the MPE_SELECTBOX table.|
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|SOFTSELECT|dcdemo.mpe_tables.libref|A distinct list of values (max 1000) are taken from this library.member.column reference, and the user-provided value may (or may not) be in this list. This list may be supplemented by entries in the MPE_SELECTBOX table.|
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|[HARDSELECT_HOOK](/dynamic-cell-dropdown)|/logical/folder/stpname|A SAS service (STP or Viya Job) or a path to a SAS program on the filesystem. User provided values **must** be in this list. Cannot be used alongside a SOFTSELECT_HOOK.|
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|[SOFTSELECT_HOOK](/dynamic-cell-dropdown)|/physical/path/program.sas|A SAS service (STP or Viya Job) or a path to a SAS program on the filesystem. User-provided values may (or may not) be in this list. Cannot be used alongside a HARDSELECT_HOOK.|
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## Dropdowns
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There are now actually FIVE places where you can configure dropdowns!
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1. The [MPE_SELECTBOX](/dcc-selectbox/) table
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2. The HARDSELECT validation (library.member.column reference)
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3. The SOFTSELECT validation (library.member.column reference)
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4. The HARDSELECT_HOOK validation (SAS Program)
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5. The SOFTSELECT_HOOK validation (SAS Program)
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How do these inter-operate?
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Well - if you have values in MPE_SELECTBOX and/or HARDSELECT / SOFTSELECT tables, they will be merged together, and served in ADDITION to the values provided by any HOOK program.
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Dropdowns are SOFT by default, unless a HARD rule is present.
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Data Controller will not let you submit both a HARDSELECT_HOOK and a SOFTSELECT_HOOK on the same variable.
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