SAP tables are created, displayed and maintained via the SAP data dictionary using transactions such as SE11 and SE80 and are the building blocks of the SAP environment. It is here where all the data within your SAP system is stored ready to be processed or accessed via your ABAP code. But it's not just business data like tables such as MARA and MARC that store material details or EKKO and EKPO that store purchasing details but also the core info that essentially makes up the system.
For example when you create an ABAP report/program this code is then stored within a database table. Not only that the metadata of tables is also stored in database tables. For example, DD02L stores the global settings and attributes for each table, DD03L stores the list of fields that make up the table. The details about each of these fields are also stored in a variety of tables depending on how the field is made up.
Here is a list of tables organised by SAP functional or module area (i.e. CRM, MM etc) to help you find the information you are looking for.
A000 Condition Table for Pricing
PA0000 HR Master record tables(info types for PNP ldb)
COVP CO Object: Line Items (See FM HRGPBS_DRILL_READ_COVP)
EKKO SAP PO tables
DD02V Data dictionary tables
TRDIR Table of SAP programs
USR02 Logon data
So you can see there is a lot of complicated interlinked information stored in hundreds of thousands of sap tables! But how do you know what is stored in what? Well the simple answer is experienced plays a big part and is also why you get a lot of specialisation in SAP. Because along with all these tables there are many transactions that allow a user to add, maintain and process the data.
But this is also where SE80.can help, providing information of all these database tables (also includes Structures and Views). This allows you to be able to perform a simple keyword search (i.e. table name/title) and view the details of each table on one page including details such as:
• Name of table/database
• Delivery class
• Text table if appropriate
• Field list
• Key field indicator
• Data element
• Data type
• Check table
• Field description
• Link to full details about each field/data element/domain
As mentioned above there are many transactions that allow you to maintain the data within SAP tables but what if you want to add data directly to a database. There are two ways to do this, the first method is manually via transactions such as SM30, SE16, SE80 etc. and the second method is via ABAP code inserted into a program or report.