SAP ABAP Internal Table: Create, Read, Populate, Copy & Delete
What is an Internal Table?
Interior TABLE are utilized to get information from a decent construction for dynamic use in ABAP. Each line in the inward table has a similar field structure. The primary use for inside tables is for putting away and designing information from a data set table inside a program. In this instructional exercise you will learn:
What is a Work Area ?
Workspaces are single columns of information. They ought to have similar organization as any of the inward tables. Handling the information in an inner table each line in turn is utilized.
Distinction Between Internal Table and a Work Area ?
An image says 1,000 words
Kinds of Internal Tables
There are two kinds of inside tables.
Inward tables with HEADER line
Inward tables without HEADER line.
Inward Tables with Header Line
Here the framework consequently makes the workspace.
The workspace has similar information type as inward table. Non-functional requirements are an essential aspect of software and system development, focusing on the quality attributes and characteristics that shape the overall user experience, performance, security, and maintainability of the product. Unlike functional requirements, which describe what the system should do, non-functional requirements dictate how the system should perform. They are equally crucial as functional requirements and play a significant role in ensuring the success and acceptance of a product in the market.
Non-functional requirements are broad and cover various
aspects, including performance, scalability, reliability, security, usability,
maintainability, and compatibility. Let's explore each of these categories in
detail:
1. Performance:
Performance requirements define the system's responsiveness and efficiency
under various workloads and conditions. This includes response times,
throughput, and resource utilization. For example, a non-functional requirement
may state that the system should respond to user actions within 2 seconds, even
during peak loads.
2. Scalability:
Scalability addresses the system's ability to handle increasing demands and
accommodate growth without sacrificing performance. Non-functional requirements
related to scalability might specify that the system should support 10,000
concurrent users or handle a certain number of transactions per hour.
3. Reliability:
Reliability ensures the system's ability to perform consistently and correctly
over time without failures or errors. Non-functional requirements might dictate
that the system should have a mean time between failures (MTBF) of at least
10,000 hours or a high availability rate of 99.99%.
4. Security:
Security requirements aim to protect the system and its data from unauthorized
access, data breaches, and other potential threats. Non-functional requirements
may specify encryption standards, authentication mechanisms, and access
controls to meet security standards and compliance regulations.
5. Usability:
Usability refers to the ease of use and user-friendliness of the system.
Non-functional requirements may focus on aspects such as user interface design,
navigation, accessibility, and support for various devices and platforms to
enhance user experience.
6. Maintainability:
Maintainability addresses the ease of modifying, updating, and enhancing the
system over its lifecycle. Non-functional requirements might demand
well-documented code, adherence to coding standards, and modular architecture
to simplify future maintenance.
7. Compatibility:
Compatibility requirements ensure that the system can operate and interact
effectively with other systems, hardware, and software. Non-functional
requirements might specify support for specific browsers, operating systems, or
integration standards.
Non-functional requirements need to be specific, measurable,
achievable, relevant, and time-bound (SMART) to ensure effective implementation
and evaluation. To gather these requirements, stakeholders, including
end-users, business analysts, developers, and testers, collaborate to identify
and prioritize the critical quality attributes for the system.
It is important to recognize that non-functional
requirements may have trade-offs, and optimizing one aspect could impact
another. For example, increasing security measures might result in slower
system performance. Therefore, it is crucial to strike a balance and make
informed decisions during the development process.
Throughout the software development lifecycle,
non-functional requirements are verified and validated through testing and
performance evaluation. Testing tools, load testing, stress testing, and other
techniques are employed to assess if the system meets the specified
non-functional requirements.
In conclusion, non-functional requirements play a vital role
in shaping the overall success of a software or system project. By addressing
aspects such as performance, scalability, reliability, security, usability,
maintainability, and compatibility, non-functional requirements ensure that the
system meets the users' expectations and performs optimally in real-world
scenarios. Proper identification, documentation, and verification of
non-functional requirements are crucial for delivering high-quality software
products that meet the needs of the end-users and the business.
This workspace is known as the HEADER line
It is here that every one of the progressions or any of the activity on the items in the table are finished. Accordingly, records can be straightforwardly embedded into the table or gotten to from the inside table straightforwardly.
Take the next step |
Inner Tables without Header Line :
Here there is no workspace related with the table.
Workspace is to be expressly determined when we want to access such tables.
Consequently these tables can't be gotten to straightforwardly.
Making Internal Tables
There are numerous ways of making an Internal Table. Lets check out at them individually
1.By Using the Type Statement
Allow us now to make an Internal table itab utilizing the TYPE explanation
An inner table itab is made with the design of line. Besides proclaiming the construction of an inward table, the OCCURS proviso likewise characterizes the number of table sections that are kept up with in primary storage(in this case 10). Additional records are worked out to paging region and can impact execution
2.By alluding to another Table
You can make an interior table by alluding to a current table. The current table could be a standard SAP table, a Z table or another inner table.
Language structure-
Populating Internal Tables
Since we have effectively made a few inside tables, let us perceive how would we populate them for certain records. There are different strategies accessible to populate tables
Experience the difference |
1.Append Data line by line
The principal technique accessible is the utilization of the APPEND articulation.
Utilizing the APPEND explanation we can either add one line from one more workspace to the inside table or we can add one introductory line to the inward table..
Linguistic structure -
Results : ' ' '0'
Starting lines adds a line introduced with the right incentive for its sort to the table. Here , col1 is a person and col2 is a number. Then APPEND starting line, adds a line introduced regarding the information kind of the sections, for example space for col1 and 0 for col2.
2.Using COLLECT articulation
Gather is one more type of articulation utilized for populating the inward tables. By and large COLLECT is utilized while embedding lines into an inner table with novel standard key.
Grammar
Incase of tables with Header line, INTO choice is discarded. Assume there is now a section having a key same as the one you are attempting to add, then another line isn't added to the table, however the numeric fields of both the passages are added and just a single section relating to the key is available. Worth of SY-TABIX is changed to the line of the first passage. Else COLLECT demonstrations like APPEND and SY-TABIX contains the file of the handled line.
3.Using INSERT proclamation
Embed explanation adds a line/workspace to the interior table. You can indicate the situation at which the new line is to be added by utilizing the INDEX condition with the INSERT articulation.
Punctuation
Duplicating Internal Tables
The items in one inner table can be duplicated to one more by utilizing the APPEND LINES or INSERT LINES explanation. A more less difficult way is to usetany of the accompanying syntax's. These duplicate the items in ITAB1 to ITAB2. Incase of inside tables with header line we need to utilize [] inorder to recognize from workspace. Thus, to duplicate items in inner tables with header line the linguistic structure becomes,
Peruse Internal Tables
We are presently acquainted with the production of inner tables and populating them with information. We will presently perceive how would we really utilize the information or recover the information from the inside tables.
1. Utilizing Loop - Endloop
One of the approaches to getting to or perusing the inside table is by utilizing LOOP-ENDLOOP. Here when you express LOOP AT ITABLE, then the inner table ITABLE is perused line by line. You can get to the upsides of the sections for that line during any piece of the LOOP-ENDLOOP structure. The worth of the SY-SUBRC is set to 0, regardless of whether only one record is perused.
2. Utilizing READ
The other technique for perusing the inside table is by utilizing the READ assertion. Punctuation Peruse TABLE