31. What happens when a table is activated in DD? 
Ans. To be able to accessed by other objects like programs.

32. What is a check table and what is a value table? 
Ans. A foreign key links two tables T1 and T2 by assigning fields of table T1 to the primary key fields of table T2. Table T2 is then known as the check table of the foreign key.
value table : when you define a domain, you already know that all fields that use the domain will need to be checked against a particular table. You can store this information in the domain definition by specifying a value table.
If you try to define a foreign key for a field that points to this domain, the value table of the domain is proposed as the check table for the foreign key.




33. What are match codes? describe? 
Ans.



34. What transactions do you use for data analysis? 


35. What is table maintenance generator? 
Ans.




36. What are ranges? What are number ranges? 
Ans. SELECT-OPTION

37. What are select options and what is the diff from parameters? 
Ans. Select options are for range of values.
        Parameters are used for simple queries of single values. 

38. How do you validate the selection criteria of a report? 
Ans. AT SELECTION -SCREEN.
        IF carrid = '11000'.
	     error message.
         ENDIF.

Q.  And how do you  display initial  values in a selection screen? 
 Ans.  Using VARIANTS.

39. What are selection texts? 
Ans.  Long text for select option / parameters . Selection text (SELECT-OPTION, PARAMETER). This description appears on the selection screen.

40. What is CTS and what do you know about it? 
Ans.  It  intended for the system administrator who sets up the Change and Transport System (CTS).