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While the USER_TABLES view provides information on your table names and storage, USER_TAB_COLUMNS is used to obtain detailed information of each column of a table. - Column names, - Column data types - Length of data types - Precision and scale for NUMBER columns - Whether null are allowed - Default value. DESCRIBE user_tab_columns; Name Null? Type TABLE_NAME NOT NULL VARCHAR2(30) COLUMN_NAME NO..

While the USER_TABLES view provides information on your table names and storage, USER_TAB_COLUMNS is used to obtain detailed information of each column of a table. - Column names, - Column data types - Length of data types - Precision and scale for NUMBER columns - Whether null are allowed - Default value. DESCRIBE user_tab_columns; Name Null? Type TABLE_NAME NOT NULL VARCHAR2(30) COLUMN_NAME NO..

To obtain the names of all of your tables, you can use the USER_TABLES.DESCRIBE user_tables; Name Null? Type TABLE_NAME NOT NULL VARCHAR2(30) TABLESPACE_NAME VARCHAR2(30) CLUSTER_NAME VARCHAR2(30) IOT_NAME VARCHAR2(30) STATUS VARCHAR2(8) PCT_FREE NUMBER PCT_USED NUMBER SELECT table_name FROM user_tables;TABLE_NAME DEPT EMPLOYEES2 REGIONS LOCATIONS DEPARTMENTS JOBS EMPLOYEES JOB_HISTORY JOB_GRADE..

To obtain the names of all of your tables, you can use the USER_TABLES.DESCRIBE user_tables; Name Null? Type TABLE_NAME NOT NULL VARCHAR2(30) TABLESPACE_NAME VARCHAR2(30) CLUSTER_NAME VARCHAR2(30) IOT_NAME VARCHAR2(30) STATUS VARCHAR2(8) PCT_FREE NUMBER PCT_USED NUMBER SELECT table_name FROM user_tables;TABLE_NAME DEPT EMPLOYEES2 REGIONS LOCATIONS DEPARTMENTS JOBS EMPLOYEES JOB_HISTORY JOB_GRADE..

DESCRIBE DICTIONARY;Name Null? Type TABLE_NAME VARCHAR2(30) COMMENTS VARCHAR2(4000) SELECT * FROM dictionary WHERE table_name = 'USER_OBJECT' COMMENTS USER_OBJECTS Objects owned by the user The Dictionary view contains the name and short description of each dictionary view to which you have access. From the dictionary view, you can find what kinds of views are in the Oracle database. The names i..

DESCRIBE DICTIONARY;Name Null? Type TABLE_NAME VARCHAR2(30) COMMENTS VARCHAR2(4000) SELECT * FROM dictionary WHERE table_name = 'USER_OBJECT' COMMENTS USER_OBJECTS Objects owned by the user The Dictionary view contains the name and short description of each dictionary view to which you have access. From the dictionary view, you can find what kinds of views are in the Oracle database. The names i..

Oracle Server : Consist of base tables and user-accessible views. - Several views that summarized and display the information stored in the base tables of the data dictionary. - Most user cannot access to the base tables. - The Oracle user SYS owns all base tables and user-accessible views of the data dictionary. View naming convention : - User : User's view (what is in your schema; what you own..

Oracle Server : Consist of base tables and user-accessible views. - Several views that summarized and display the information stored in the base tables of the data dictionary. - Most user cannot access to the base tables. - The Oracle user SYS owns all base tables and user-accessible views of the data dictionary. View naming convention : - User : User's view (what is in your schema; what you own..

A collection, data dictionary, is created and maintained by the Oracle server and contains information about the database. The basic structure is alike the other database data. Use SQL statement to access the data dictionary.(Read Only) Normarlly, users cannot access to the data dictionary table directly. They are only allowed to access to the view of the data dictionary. What can a user find fr..

A collection, data dictionary, is created and maintained by the Oracle server and contains information about the database. The basic structure is alike the other database data. Use SQL statement to access the data dictionary.(Read Only) Normarlly, users cannot access to the data dictionary table directly. They are only allowed to access to the view of the data dictionary. What can a user find fr..