An Overview of ALV Tools

Simple, two-dimensional table

They contain any number of rows, that

• each have the same structure

• have no hierarchical relationships to one another

The structure is defined by the columns. Every column has specific properties that are automatically transferred to the values of the column.

Hierarchical-sequential list

Hierarchical-sequential lists consist of any number of rows that are divided into exactly two hierarchy levels . This differentiates between header and position rows: Position rows are subordinate to the header rows. For every header, there can be any number subordinate position rows.

Tree Structure

In tree structures you display the table-type data in any number of hierarchy levels . The rows of the tree structure are called nodes. Every node, no matter which hierarchy level it is on, has the same data structure. However, the nodes are related to one another hierarchically, such as superordinate or subordinate nodes (parent-child relationship) or nodes on the same level (sibling-sibling relationship).