Defining Teradata Views

The following properties are applicable to a Teradata View object.

Tab

Property

Description

Additional Information
  Name Specifies the name of the view  
Database Specifies the database or user to which the view belongs  
Use Replace Syntax Specifies whether the REPLACE syntax is used Selecting this option replaces the syntax with the new DDL that is generated during Forward Engineering
Generate Specifies whether a DDL statement is generated for the view during forward engineering  
General

 

 Select Top Percent Specifies the percentage of the rows to return from the select operation  
Select With Ties Specifies whether all qualified rows with the same value (must have ORDER BY defined) are included in the result set  
Recursive Specifies whether the view is recursive  

With

Specifies the recursive and non-recursive modifier queries

 
Locking Name Specifies the lock name  
Locking Object Specifies the type of object to lock

Database: Indicates that all rows of all tables within the specified database is locked.

Table: Indicates that all rows in the specified table is locked.

View: Indicates that all underlying tables accessed by the specified view is locked.

Row: Indicates that the primary and fallback copies of the specified row is locked.

For OR In

Specifies the type of the placed lock

 
Lock Level Specifies the lock severity for the selected object

Access: Indicates that the system permits read access to an object that might already be locked for READ or WRITE

Read: Indicates that the system restricts modifications to the object and the user is allowed only the read access

Share: Indicates that the read access is shared between multiple transactions from the same statement.

Write: Indicates that the system restricts access by other users

Exclusive: This lock is placed only on a database or table when the object is undergoing structural changes.

Read Override: Indicates that the READ lock in a view is overridden by a LOCKING FOR ACCESS modifier

Load Committed: Indicates that the system permits read access to committed rows in load-isolated tables without blocking load-isolated modifications

Excl: This lock is placed only on a database or table when the object is undergoing structural changes.

MODE

Specifies whether an optional keyword is used for locking

 
Lock No Wait Specifies whether to wait to acquire a lock  
Database Specifies the database to lock  
Entity Lock Specifies the entity to lock  
Temporal Qualifier Default Date Timestamp Expression Specifies the default TIMESTAMP expression  
Valid-Time Qualifier Specifies the valid-time qualifier to define temporal properties

Current Valid-Time: Indicates that the query applies to only data that is currently in effect

Sequenced Valid-Time: Indicates that the query applies to only data that is in effect for a specified time period

Non-Sequenced Valid-TIme: Indicates that the tables are treated as non-temporal, and valid-time dimension is ignored

Valid-Time As Of: Indicates that the query applies to only data that is in effect at a specified point in time
Valid-Time Period Expression Specifies the period of applicability for the current, sequenced, or non-sequenced query Available when Sequenced Valid-Time or No-Sequenced Valid-Time temporal qualifiers are selected.
Valid-Time Date Timestamp Expression Specifies the beginning time of applicability for the sequenced or non-sequenced query Available when Valid-Time As Of temporal qualifier is selected.
Select Available Tables and Views Specifies a list of available tables and views Under Available Tables and Views, select the columns that you want to define as view column. Then, click .
Columns Specifies the columns selected from the available tables and views
Select Type Specifies the expression type to indicate whether duplicate rows are returned

Distinct: Indicates that the statement discards duplicate rows and returns only the remaining rows

All: Indicates that the statement returns all rows, including duplicate rows
Restriction Type Specifies the With Check Option for the view column.

With Check Option: Indicates that all modifications made through the view to the underlying tables satisfy the definition of the view

With Cascaded Check: Indicates that the all underlying views undergo the check testing

With Local Check Option: Indicates that the check testing is restricted only to the views being defined
Alias Specifies a temporary name given to a table, column, or expression present in a query based on the selected column  
Expression Specifies the expression for a selected column Available only when the selected column is a user-defined function expression
From Available Tables and Views Specifies a list of available tables and views Under Available Tables and Views, select the tables or views from which you want to select view columns. Then, click .
From Specifies the selected tables and views
Alias Specifies an alternate name for the selected table or view