Please tell more system tables like "all_tab_columns"

Question

...which are used for DDL & storing data dictionary of the database.
I am new to the field please help me.

Answer 1

SQL> SELECT table_name,
       comments
  FROM dict
WHERE ROWNUM <= 100
ALL_ALL_TABLES                 Description of all object and relational tables accessible to the user         
ALL_APPLY                      Details about each apply process that dequeues from the queue visible to the cur
                               rent user                                                                      
ALL_APPLY_CONFLICT_COLUMNS     Details about conflict resolution on tables visible to the current user        
ALL_APPLY_DML_HANDLERS         Details about the dml handler on tables visible to the current user            
ALL_APPLY_ERROR                Error transactions that were generated after dequeuing from the queue visible to
                                the current user                                                              
ALL_APPLY_KEY_COLUMNS          Alternative key columns for a STREAMS table visible to the current user        
ALL_APPLY_PARAMETERS           Details about parameters of each apply process that dequeues from the queue visi
                               ble to the current user                                                        
ALL_APPLY_PROGRESS             Information about the progress made by the apply process that dequeues from the
                               queue visible to the current user                                              
ALL_ARGUMENTS                  Arguments in object accessible to the user                                     
ALL_ASSOCIATIONS               All associations available to the user                                         
ALL_AUDIT_POLICIES             All fine grained auditing policies in the database                             
ALL_BASE_TABLE_MVIEWS          All materialized views with log(s) in the database that the user can see       
ALL_CAPTURE                    Details about each capture process that stores the captured changes in a queue v
                               isible to the current user                                                     
ALL_CAPTURE_PARAMETERS         Details about parameters for each capture process that stores the captured chang
                               es in a queue visible to the current user                                      
ALL_CAPTURE_PREPARED_DATABASE  Is the local database prepared for instantiation?                              
ALL_CAPTURE_PREPARED_SCHEMAS   All user schemas at the local database that are prepared for instantiation     
ALL_CAPTURE_PREPARED_TABLES    All tables visible to the current user that are prepared for instantiation     
ALL_CATALOG                    All tables, views, synonyms, sequences accessible to the user                  
ALL_CLUSTERS                   Description of clusters accessible to the user                                 
ALL_CLUSTER_HASH_EXPRESSIONS   Hash functions for all accessible clusters                                     
ALL_COLL_TYPES                 Description of named collection types accessible to the user                   
ALL_COL_COMMENTS               Comments on columns of accessible tables and views                             
ALL_COL_PRIVS                  Grants on columns for which the user is the grantor, grantee, owner,           
                                or an enabled role or PUBLIC is the grantee                                   
.........