The login credentials used to connect to the mainframe DB2 database must grant read access to the following DB2 system catalog tables:
| Object Type | DB2 System Catalog Table | 
|---|---|
| tables, columns | SYSTABLES, SYSCOLUMNS, SYSSEQUENCES | 
| indexes | SYSINDEXES, SYSKEYS | 
| constraints (relational, check, key) | SYSCHECKS, SYSCHECKDEP, SYSCHECKS2, SYSCONSTDEP, SYSTABCONST, SYSKEYCOLUSE, SYSRELS, SYSFOREIGNKEYS | 
| views | SYSVIEWS, SYSVIEWDEPENDENCY |