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讨论这些ABAPER面试常见的问题

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发表于 2006-4-10 17:25:00 | 显示全部楼层 |阅读模式
这些都是我从网上摘录过来的想和大家一起讨论下其实一些问题如何回答:

ABAP Technical Interview Questions:

1. What is the typical structure of an ABAP program?
2. What are field symbols and field groups.? Have you used "component idx of structure" clause with field groups?
3. What should be the approach for writing a BDC program?
4. What is a batch input session?
5. What is the alternative to batch input session?
6. A situation: An ABAP program creates a batch input session. We need to submit the program and the batch session in background. How to do it?
7. What is the difference between a pool table and a transparent table and how they are stored at the database level?
8. What are the problems in processing batch input sessions? How is batch input process different from processing on line?
9. What do you define in the domain and data element?
10. What are the different types of data dictionary objects?
11. How many types of tables exist and what are they in data dictionary?
12. What is the step-by-step process to create a table in data dictionary?
13. Can a transparent table exist in data dictionary but not in the database physically?
14. What are the domains and data elements?
15. Can you create a table with fields not referring to data elements?
16. What is the advantage of structures? How do you use them in the ABAP programs?
17. What does an extract statement do in the ABAP program?
18. What is a collect statement? How is it different from append?
19. What is open sql vs native sql?
20. What does an EXEC SQL stmt do in ABAP? What is the disadvantage of using it?
21. What is the meaning of ABAP editor integrated with ABAP data dictionary?
22. What are the events in ABAP language?
23. What is an interactive report? What is the obvious diff of such report compared with classical type reports?
24. What is a drill down report?
25. How do you write a function module in SAP? Describe.
26. What are the exceptions in function module?
27. What is a function group?
28. How are the date abd time field values stored in SAP?
29. What are the fields in a BDC_Tab Table?
30. Name a few data dictionary objects?
31. What happens when a table is activated in DD?
32. What is a check table and what is a value table?
33. What are match codes? Describe?
34. What transactions do you use for data analysis?
35. What is table maintenance generator?
36. What are ranges? What are number ranges?
37. What are select options and what is the diff from parameters?
38. How do you validate the selection criteria of a report? And how do you display initial values in a selection screen?
39. What are selection texts?
40. What is CTS and what do you know about it?
41. When a program is created and need to be transported to prodn does selection texts always go with it? if not how do you make sure? Can you change the CTS entries? How do you do it?
42. What is the client concept in SAP? What is the meaning of client independent?
43. Are programs client dependent?
44. Name a few system global variables you can use in ABAP programs?
45. What are internal tables? How do you get the number of lines in an internal table? How to use a specific number occurs statement?
46. How do you take care of performance issues in your ABAP programs?
47. What are datasets?
48. How to find the return code of a stmt in ABAP programs?
49. What are interface/conversion programs in SAP?
50. Have you used SAP supplied programs to load master data?
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 楼主| 发表于 2006-4-10 17:26:00 | 显示全部楼层
其实对于第一个问题偶就不知如何回答

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发表于 2006-4-10 17:33:00 | 显示全部楼层
我觉得我好像都似曾相识,很多都用过,呵呵。不过从比较理论的角度去回答的确比较麻烦,光会做,不会说也是程序员的通病吧,呵呵。
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 楼主| 发表于 2006-4-10 17:34:00 | 显示全部楼层
对于18. What is a collect statement? How is it different from append?

APPEND LINE TO ITAB
COLLECT LINE TO ITAB
前者是在ITAB是加入一个新行,但不会对记录的重复性进行检查,而后者则会做相应的记录重复性检查工作.

不知是不是这样回答.
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 楼主| 发表于 2006-4-11 08:59:00 | 显示全部楼层
50. Have you used SAP supplied programs to load master data?

不知LSMW的程序算不算
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发表于 2006-4-11 09:34:00 | 显示全部楼层
COLLECT LINE TO ITAB应该是累加的功能吧,对于主键重复的纪录合并数值纪录。
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发表于 2006-4-11 11:51:00 | 显示全部楼层
最初由 jhgsp 发布
[B]COLLECT LINE TO ITAB应该是累加的功能吧,对于主键重复的纪录合并数值纪录。 [/B]


COLLECT会对非数字列相同的行的数字列进行累加。
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发表于 2006-4-11 11:57:00 | 显示全部楼层
嗯,学习一下!
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 楼主| 发表于 2006-4-11 15:06:00 | 显示全部楼层
31. What happens when a table is activated in DD?

是不是只有ACTIVATED后的数据才能真正保存到DB里,在没做activated之前数据是保存在本地.
不知可否这样来说明.
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 楼主| 发表于 2006-4-12 09:04:00 | 显示全部楼层
没人理...
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