Support Data classification

[matt2005]

Summary of new feature

• Support add/removing/updating of data classification for a table column

Proposed technical details (if applicable)

• Classification Information types and Sensitivity are stored as extended properties on tables
  • The values are GUID's, I've found a mapping table here GUID Mapping
• Below is the SQL code that was added when adding a Classification to TABLE1 and Column 'EXPIRATION_TS'. the classfication was Information type: [NA] and Sensitivity: General

EXEC sys.sp_addextendedproperty 
     @name = N'sys_information_type_id', 
     @value = N'', 
     @level0type = N'SCHEMA', 
     @level0name = N'dbo', 
     @level1type = N'TABLE', 
     @level1name = N'TABLE1', 
     @level2type = N'COLUMN', 
     @level2name = N'EXPIRATION_TS';
GO
EXEC sys.sp_addextendedproperty 
     @name = N'sys_information_type_name', 
     @value = N'', 
     @level0type = N'SCHEMA', 
     @level0name = N'dbo', 
     @level1type = N'TABLE', 
     @level1name = N'TABLE1', 
     @level2type = N'COLUMN', 
     @level2name = N'EXPIRATION_TS';
GO
EXEC sys.sp_addextendedproperty 
     @name = N'sys_sensitivity_label_id', 
     @value = N'684a0db2-d514-49d8-8c0c-df84a7b083eb', 
     @level0type = N'SCHEMA', 
     @level0name = N'dbo', 
     @level1type = N'TABLE', 
     @level1name = N'TABLE1', 
     @level2type = N'COLUMN', 
     @level2name = N'EXPIRATION_TS';
GO
EXEC sys.sp_addextendedproperty 
     @name = N'sys_sensitivity_label_name', 
     @value = N'General', 
     @level0type = N'SCHEMA', 
     @level0name = N'dbo', 
     @level1type = N'TABLE', 
     @level1name = N'TABLE1', 
     @level2type = N'COLUMN', 
     @level2name = N'EXPIRATION_TS';
GO

Here is the same but with the Information Type set to Other

EXEC sys.sp_addextendedproperty 
     @name = N'sys_information_type_id', 
     @value = N'9C5B4809-0CCC-0637-6547-91A6F8BB609D', 
     @level0type = N'SCHEMA', 
     @level0name = N'dbo', 
     @level1type = N'TABLE', 
     @level1name = N'Table1', 
     @level2type = N'COLUMN', 
     @level2name = N'EXPIRATION_TS';
GO
EXEC sys.sp_addextendedproperty 
     @name = N'sys_information_type_name', 
     @value = N'Other', 
     @level0type = N'SCHEMA', 
     @level0name = N'dbo', 
     @level1type = N'TABLE', 
     @level1name = N'Table1', 
     @level2type = N'COLUMN', 
     @level2name = N'EXPIRATION_TS';
GO
EXEC sys.sp_addextendedproperty 
     @name = N'sys_sensitivity_label_id', 
     @value = N'684a0db2-d514-49d8-8c0c-df84a7b083eb', 
     @level0type = N'SCHEMA', 
     @level0name = N'dbo', 
     @level1type = N'TABLE', 
     @level1name = N'Table1', 
     @level2type = N'COLUMN', 
     @level2name = N'EXPIRATION_TS';
GO
EXEC sys.sp_addextendedproperty 
     @name = N'sys_sensitivity_label_name', 
     @value = N'General', 
     @level0type = N'SCHEMA', 
     @level0name = N'dbo', 
     @level1type = N'TABLE', 
     @level1name = N'Table1', 
     @level2type = N'COLUMN', 
     @level2name = N'EXPIRATION_TS';
GO

Latest version of dbatools as of writing

• dbatools 1.0.83

[wsmelton]

Data Classification was added in SMO but we are not at the required version of SMO at this time.

[matt2005]

It doesn't need to be done via SMO, yes ideally it would be.

Here is what I use to get the current classifications

$SQLInstance='Server1'
$Database='Database1'
$Query=@"
SELECT Schema_name(objects.schema_id) AS schema_name, 
objects.NAME                   AS table_name, 
columns.NAME                   AS column_name, 
ISNULL(EP.information_type_name,'') AS  information_type_name,
ISNULL(EP.sensitivity_label_name,'') AS  sensitivity_label_name
FROM (SELECT ISNULL(EC1.major_id,EC2.major_id) AS major_id, 
      ISNULL(EC1.minor_id,EC2.minor_id) AS minor_id, 
      EC1.information_type_name, 
      EC2.sensitivity_label_name 
      FROM (SELECT major_id, 
             minor_id,
              NULLIF(value,'') AS information_type_name
              FROM sys.extended_properties 
              WHERE NAME = 'sys_information_type_name') EC1
              FULL OUTER JOIN (SELECT major_id, 
                 minor_id, 
                                NULLIF(value,'') AS sensitivity_label_name
                                FROM sys.extended_properties 
                                WHERE  NAME = 'sys_sensitivity_label_name') EC2 
                                ON ( EC2.major_id = EC1.major_id AND EC2.minor_id =              EC1.minor_id )) EP 
 JOIN sys.objects objects 
 ON EP.major_id = objects.object_id 
 JOIN sys.columns columns 
 ON ( EP.major_id = columns.object_id AND EP.minor_id = columns.column_id )
"@

$ClassifiedColumns=Invoke-DBAQuery -SQLInstance $SqlInstance -Database $Database -Query $query

[wsmelton]

We require this be done via SMO first, unless someone shows it does not work, or it is unreasonably difficult to work....SSMS is using SMO.

[matt2005]

Ok,
Here is my workaround while the dbatools is not at the requred SMO version. In case someone else needs to do it.

$SQLInstance = 'Server1'
$Database = 'Database1'
# -- Mappings
$InformationTypeMapping = @{
    "Networking"    = "B40AD280-0F6A-6CA8-11BA-2F1A08651FCF";
    "Contact Info"  = "5C503E21-22C6-81FA-620B-F369B8EC38D1";
    "Credentials"   = "C64ABA7B-3A3E-95B6-535D-3BC535DA5A59";
    "Credit Card"   = "D22FA6E9-5EE4-3BDE-4C2B-A409604C4646";
    "Banking"       = "8A462631-4130-0A31-9A52-C6A9CA125F92";
    "Financial"     = "C44193E1-0E58-4B2A-9001-F7D6E7BC1373";
    "Other"         = "9C5B4809-0CCC-0637-6547-91A6F8BB609D";
    "Name"          = "57845286-7598-22F5-9659-15B24AEB125E";
    "National ID"   = "6F5A11A7-08B1-19C3-59E5-8C89CF4F8444";
    "SSN"           = "D936EC2C-04A4-9CF7-44C2-378A96456C61";
    "Health"        = "6E2C5B18-97CF-3073-27AB-F12F87493DA7";
    "Date Of Birth" = "3DE7CC52-710D-4E96-7E20-4D5188D2590C"
}
$SensitivityLabelMapping = @{
    "Public"                     = "1866CA45-1973-4C28-9D12-04D407F147AD";
    "General"                    = "684A0DB2-D514-49D8-8C0C-DF84A7B083EB";
    "Confidential"               = "331F0B13-76B5-2F1B-A77B-DEF5A73C73C2";
    "Confidential - GDPR"        = "989ADC05-3F3F-0588-A635-F475B994915B";
    "Highly Confidential"        = "B82CE05B-60A9-4CF3-8A8A-D6A0BB76E903";
    "Highly Confidential - GDPR" = "3302AE7F-B8AC-46BC-97F8-378828781EFD";
}

$ClassifyQuery = @"
EXEC sys.sp_addextendedproperty 
     @name = N'sys_information_type_id', 
     @value = N'{3}', 
     @level0type = N'SCHEMA', 
     @level0name = N'dbo', 
     @level1type = N'TABLE', 
     @level1name = N'{0}', 
     @level2type = N'COLUMN', 
     @level2name = N'{1}';
GO
EXEC sys.sp_addextendedproperty 
     @name = N'sys_information_type_name', 
     @value = N'{2}', 
     @level0type = N'SCHEMA', 
     @level0name = N'dbo', 
     @level1type = N'TABLE', 
     @level1name = N'{0}', 
     @level2type = N'COLUMN', 
     @level2name = N'{1}';
GO
EXEC sys.sp_addextendedproperty 
     @name = N'sys_sensitivity_label_id', 
     @value = N'{5}', 
     @level0type = N'SCHEMA', 
     @level0name = N'dbo', 
     @level1type = N'TABLE', 
     @level1name = N'{0}', 
     @level2type = N'COLUMN', 
     @level2name = N'{1}';
GO
EXEC sys.sp_addextendedproperty 
     @name = N'sys_sensitivity_label_name', 
     @value = N'{4}', 
     @level0type = N'SCHEMA', 
     @level0name = N'dbo', 
     @level1type = N'TABLE', 
     @level1name = N'{0}', 
     @level2type = N'COLUMN', 
     @level2name = N'{1}';
GO
"@
# Get Columns - General / Other
$ColumnQuery = @"
-- Get All General Columns
select SCH.Name As SchemaName, TBL.Name as TableName, SCOL.Name as ColumnName  from sys.tables TBL
INNER join sys.Schemas SCH ON
TBL.schema_id = SCH.Schema_id
INNER Join Syscolumns scol ON
TBL.object_id = scol.id
where SCOL.Name in ('Entered_ts','Expiration_ts')
and SCH.Name = 'dbo'
"@
$ColumnsToProcess = Invoke-DBAQuery -SQLInstance $SqlInstance -Database $Database -Query $ColumnQuery
Foreach ($Row in $ColumnsToProcess)
{
    $TABLE = $Row.TableName
    $COLUMN = $Row.ColumnName
    $InformationType = 'Other'
    $InformationTypeGUID = $InformationTypeMapping.$InformationType
    $SensitivityLabel = 'General'
    $SensitivityLabelGUID = $SensitivityLabelMapping.$SensitivityLabel
    Invoke-DBAQuery -SQLInstance $SqlInstance -Database $Database -Query ($ClassifyQuery -f $TABLE, $COLUMN, $InformationType, $InformationTypeGUID, $SensitivityLabel, $SensitivityLabelGUID)
}

[wsmelton]

Once we get SMO updated we will work on adding new features and functionality that comes with the version of SMO.

[wsmelton]

This will have to be done via T-SQL. There is no documentation publicly that shows SMO has support for Data Classification.

[potatoqualitee]

New SMO is in!

[francesco1119]

It would be great if we could also Export the Data Classification