Answer / harish

the primary key defines the uniqueness of the table.

Let's take the example.MARA..the unique key or the primary key is MATERIAL number.So you cannot have two records of the same material number..the primary key is used to avoid duplicates..

By setting a foreign key brings a relation between two tables..

Let's take the example..VBAP-MATNR it has got the foreign key to the table MARA...so that you cannot enter a value which is not in the table MARA.

How do you get the number of lines in an internal table?

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what is enhancement and modification ? Explain clearly please

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Hi,have Good Command in SAP ABAP, ABAP WEBDYNPRO now i want to learn sap IS utilities.. can u plz suggest me is it useful r not? If not can i learn BI? Is ABAP with BI have gud future?

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What are the different types of loops in the sap abap?

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Name the special commands of list?

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In Table Field when display the Name, whose first charecter should be capital letter and rest will be small letter.

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what are Conversion Routings?

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what are the main technical differences between oracle and sap? it would be more helpful to me if get this answer...

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What is the difference between Selection Screen on Request and Selection screen on input?

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