To determine if theAddsandDeletestables for the "Buildings" dataset are empty before unregistering as versioned, the GIS administrator needs to reference thesde_layerstable.

1. Purpose of the sde_layers Table

Thesde_layerstable tracks the relationship between base tables and the associated delta tables (Adds and Deletes).

For each versioned dataset, the sde_layers table contains entries linking the dataset to its corresponding A and D tables (e.g., A_ and D_).

2. Steps to Verify Adds and Deletes

Identify theObjectIDof the Buildings dataset in thesde_layerstable.

Query the Adds table (A_) and Deletes table (D_) associated with the Buildings dataset:

SELECT COUNT(*) FROM A_;

SELECT COUNT(*) FROM D_;

If both queries return 0, the Adds and Deletes tables are empty, and it is safe to unregister the dataset as versioned.

3. Why Not Other Options?

table_registry: This table tracks registered datasets but does not provide information about delta tables or their contents.

gdb_items: This table stores metadata for datasets but does not have details on delta table contents.

References from Esri Documentation and Learning Resources:

Compressing a Geodatabase—ArcGIS Pro Documentation

Delta Tables in Versioned Geodatabases

Conclusion:

The GIS administrator must query thesde_layerstable to verify the Adds and Deletes tables before unregistering the dataset as versioned.