NODES

[Former Member]

1) What is mean by node?

2) Where node is used?

Help me.

[Former Member]

Hi Saritha,

There are three types of nodes.

1. Type T.

2. Type S.

3. Type C.

They are explained as below.

*1. *Type T nodes (ABAP Dictionary tables); called type Database tables from 4.5A

This type of node corresponds to the only type of node that existed prior to Release 4.0A (a flat Dictionary structure).

2.Type S nodes (structure from the ABAP Dictionary), called Dictionary Type from 4.5A,

In Releases 4.0A and 4.0B, this node type makes it possible for a flat Dictionary structure to be provided with an alias name that can be chosen at will within the logical database. This is needed if the name of one of these structures is longer than the maximum length of 14 characters allowed for node names. In addition, this node type allows you to include a Dictionary structure in a logical database numerous times under different aliases.

From Release 4.5A you can define complex types, meaning nested structures and table types, in the Dictionary. This node type allows you to use nodes with this kind of complex Dictionary type.

3.Type C nodes (complex data objects); called type Data type from 4.5A

These types of nodes refer to an arbitrary number of complex types that are defined in a type pool. From Release 4.5A, types of this sort can be better represented using complex ABAP Dictionary types. It is therefore no longer recommended that you use them in logical databases, as this leads to certain disadvantages in ABAP Query.

For more details check the below link:

[http://help.sap.com/saphelp_46c/helpdata/EN/4e/af88f86fe711d295c40000e82de14a/content.htm]

Thanks,

Sravani.

Reward if useful.