-
1. What Are The Advantages In Progress 4gl?
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- Less development effort
- Solve more complex application
- Support multiple language
- Reusability
- Less knowledge required for platform and deployments
- Support application server and web based application
- It is used for both front-end and back-end.
-
2. What Is The Latest Version In Progress And In Which Are Currently Working?
- The latest version of the PROGRESS 4GL is 10.1 Open Edge
- The currently working version is progress 9.1D
-
3. What Are The Two Ways Of Programming In Progress?
- CUI (Procedure Editor)
- GUI (ADM-2)
-
4. What Is The Syntax For Message Statement?
Syntax:
Message “
” view-as alert-box buttons Message type:
- Information
- Question
- Error
- Warning
Buttons:
- Ok
- Yes-No
- Yes-No-Cancel
Example:
Message “welcome to progress” view-as alert-box information buttons ok. -
5. What Is The Syntax For Variable Declaration?
Define variable
as format initial no-undo Example:
Define variable lv_a as integer format 999 initial 1 no-undo. -
6. Why We Are Using No-undo?
Whenever we change the value of a variable, it will store the previous value into the before image file. To avoid this reason, we are using no-undo while declaring the variable.
-
7. How Many Date Formats Available In Progress?
Two types of date format available:
- MDY
- DMY
-
8. What Are The Types Of Looping Statement?
- Repeat
- Do
- For-each
- Do-while
-
9. What Is The Use Of Entry?
It is used to extract a string from the list. This function takes two parameters one is the position of the string and another one is the list.
Syntax:
Entry (). -
10. What Is The Use Of Num-entries?
NUM-ENTRIES is used to return the no of entries available in the list .
Syntax:
Num-entries(). -
11. What Are The Types Of Blocks?
- Repeat, do, for-each block
- Procedure block
- Trigger block
- Editing block
-
12. What Is Trigger Block?
It’s a block which contains one or more statements. whenever an event occurs the corresponding trigger block will be fired.
-
13. What Is Editing Block?
Editing block is used to get the input from the user:
- Prompt-for
- Set
- Update
-
14. What Is The Difference Between Prompt-for & Set?
Prompt-for:
This is used to get input for both variable and database.Set:
This is used to get input only for variable. -
15. What Are The Types Of Procedures?
- Internal procedure
- External procedure
- Persistent procedure
- Super procedure
-
16. What Is Persistent Procedure?
It’s the procedure which keeps the value of the external procedure using handle variable. This variable will be valid until we close the progress session.
-
17. How Will You Run External Procedure Persistently?
Run
persistent set -
18. What Is The Use Of Parameter?
The parameter is used to passing the argument to function and procedure.
-
19. What Are The Types Of Parameters?
- Input
- Output
- Input-output
-
20. How Will You Define A Parameter?
Syntax:
Define
parameter as no-undo. Example:
Define input parameter ip_a as integer no-undo. -
21. What Are The Types Of Programming Models?
- Procedure driven model (CUI)
- Event driven model (GUI)
-
22. What Is Function?
Function is a sub-program like procedure but it can return only one single value.
-
23. What Is A Frame?
Frame is a rectangular display area with in the window. It is used to display field level widgets.
-
24. What Are The Types Of Frames?
- Down
- One Down
-
25. How Will You Track The Error In The Statement?
Using error-status function we can track the error in the statement.
-
26. What Are The Methods In Error-status?
- Error
- Num-Messages
- Get-Number
- Get-Message
-
27. How Many Primary Keys Will Be In A Single Table?
Only one primary key in a single table
-
28. What Are The Types Of Indexes?
- Primary key index
- Unique index
- Word index
-
29. How Will You Fetch Single Record & Multiple Records?
- For-first and find-first are used to fetch a single record
- For each statement is used to fetch the multiple records
-
30. What Is The Difference Between Find & Find-first?
Find:
In find statements if there are any non-primary key records which has duplication will provide ambiguous error
Find-first:
In find-first statements the ambiguous error will be overcome because which is return the first record from the buffer
-
31. What Is The Difference Between Find-first And For-first?
For-first:
- Using field option for specify the field name for modification
- Using multiple index
- Using word index field
Find-first:
- In find first not support the above three statements
- In find first we use no-error and available option
-
32. What Is The Use Of No-error?
No-error statement which is used to suppress the progress errors.
-
33. What Is The Use Of Xref?
XREF is used to find out the index being used in a file
-
34. What Is The Syntax For Xref?
Compile
save XREF -
35. What Is Record Scoping?
To identify the scope of the record.
-
36. What Are The Types Of Scoping And Their Uses?
Weak scope .
eg :-
for each loopStrong scope
eg :-
Do for loop -
37. Tools To Develop Web Based Application?
- Web-speed 3.0 is a software, which is used to develop web-based applications.
- Web client is a software where client/Server applications will be accessed using browser like Netscape or Internet Explorer.
-
38. Can We Create A Word-index For An Array Field?
No, we can’t create a word-index for an array field.
-
39. What Is No-wait?
When one procedure is accessing a table in exclusive lock mode at the same time some other procedure try to access the same table it will not wait till the table is released if the no-wait option is used.
-
40. What Is The Use Of Delimiter?
The Delimiter is a character that is used to separate the field values. The default delimiter is space.
-
41. What Is The Use Of Etime & What Does It Returns?
- It is used to find out the time taking for execution of a particular block
- It returns milliseconds.
-
42. What Is Buffer-copy?
Buffer-Copy is one statement. This is used to bulk copy of a source record to a target record by copying each source field to the target field of the same name.
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