You will find that this page is all about Data Elements and how they work.
What Are Data Elements?
A data element is a fundamental data structure that is found in a data processing system. There are of course, two types of data elements and they are known as simple and compound. Simple is used to represent individual values and compound is used to represent a collection of related data elements.
Why Are Data Elements Important?
The reason why data elements are important is because they can categorise objects into two parts, one being simple and the other being compound. There is also data types that provides information that is good enough to pass as a data element. There is the data element ID, where information is needed to properly access the element data. Then there is the data element sequence number, which is used by the API (Application Programming Interface). And last but not least, there is the data element value, where it provides the actual value of a particular element.
Checksum
A checksum is basically a count of the number of bits in a transmission unit. The receiver can check if the same number of bits has arrived. If the counts match, then it is deemed to be a complete transmission.
Cyclic Redundancy Check (CRC)
This is a common technique for detecting data transmission errors. This is commonly used in digital networks and storage devices and it is also used to detect accidental changes to raw data.
Encapsulation
A method that designs modular communication protocols. These protocols are logically separate functions within the network.
Frames
Digital transmission unit that is typically used in computer networking and telecommunications. A frame also consists of having frame synchronisation, where it contains a sequence of bits or symbols.
Packets
A packet is a unit of data. Each packet contains and carries the information that will help it get to it's destination. Packets also have other names like frames, blocks, cells and segments.
Datagrams
Datagrams are basically transfer units that are associated with a packet-switched network (the type of network in which relative small units of data).
Addresses
This serves as an unique identifier for a computer network. If a computer is set up correctly, the computer can determine the addresses of other computers and can use these addresses to send messages to each other.
Sequence Numbers
A transmission sequence number (TSN) is known to be a 32-bit internal numerical sequence number that is assigned to data fragments. It is also to provide duplicate delivery detection.