What is a set of data?
The data set is a collection of related data collected from a single source. The deadline has several applications, from information compiled from the results of the survey to a set of scientific research results. In the computer and internet arena, a set of data is a group of numbers or bytes, often shown in a table with column categorizing data into subset. There are several types of data files, including sequence, distributed and access methods to virtual storage (VSAM). They store information that applications or operating systems must work properly. Typical systems include macro libraries, source programs and system parameters or variables. These sets can be cataloged so that they can be referred to an easy -to -understand name without reference to a specific storage area.
Information databases such as insurance or medical records can also use data files. The program running on the System stores information in data files. Some of these data files contain readable text thatRIGHT can be generated into assemblies. These types of records are often referred to as units and are categorized by a single identifier such as the customer or patient name. The format of individual data files also depends on the intended use of information. Different types of data files are different, but they have many common features among them.
sequential diversity of data files stores information in some kind of consecutive order. This method is most often used for information organized numerically or alphabetically. To access the item from the sequence data set, it is necessary to pass the system with items that prevent any organizational system to be programmed.
Divided data sets allow direct access to items. This method is used if there is a large amount of information, such as a large database of addresses or client information. These data files are also knownas a library. Information is organized in a way somewhat similar sequential method, despite the difference in the way of accessing information.
Access to virtual storage (VSAM) is a key set of sequenced data (KSD). These data files are stored with specific search information attached to each item, so everyone can be approached faster. This system is best for data files that are used in an unpredictable way and with a high frequency.