Ok, thanks for clarification. Database information is scanned from WMI and stored in table tblSQLDatabases. You can't enter custom details directly to the database, but you could enter custom data into custom fields of the computer the database is running on. Then you could create a report based on your databases which would list the content of the custom fields as well. Please find an example report below.
Note: Titles and data types of asset custom fields need to be defined under
Configuration\Asset pages, section
Asset custom fields.
Select Top 1000000 tblSqlDatabases.name As [DB name],
tblSqlServers.displayVersion As [SQL version],
tblSqlServers.skuName As [SQL edition],
tblAssets.AssetName,
tblAssetCustom.AssetID,
tblAssetCustom.Custom1 As [custom field 1],
tblAssetCustom.Custom2 As [custom field 2],
tblAssetCustom.Contact,
tblADusers.Displayname As [Host AD manager]
From tblSqlDatabases
Inner Join tblSqlServers On tblSqlServers.sqlServerId =
tblSqlDatabases.sqlServerId
Inner Join tblAssets On tblAssets.AssetID = tblSqlServers.AssetID
Inner Join tblAssetCustom On tblAssets.AssetID = tblAssetCustom.AssetID
Left Join tblADComputers On tblAssets.AssetID = tblADComputers.AssetID
Left Join tblADusers On tblADComputers.ManagerADObjectId =
tblADusers.ADObjectID
Where tblAssetCustom.State = 1
Order By [DB name],
tblAssets.AssetName