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Heap files are lists of unordered records of variable size. Although sharing a similar name, heap files are widely different from in-memory heaps. In-memory heaps are ordered, as opposed to heap files. Simplest and most basic method insert efficient, with new records added at the end of the file, providing chronological order
A file is a collection of related records. If there are 100 employees, then each employee would have a record (e.g. called Employee Personal Details record) and the collection of 100 such records would constitute a file (in this case, called Employee Personal Details file). Files are integrated into a database. [3]
On many computers, directories are known as folders or drawers, [1] analogous to a workbench or the traditional office filing cabinet. The name derives from books like a telephone directory that lists the phone numbers of all the people living in a certain area. Files are organized by storing related files in the same directory.
The cached files can be deleted without loss of data. /var/lib: State information. Persistent data modified by programs as they run (e.g., databases, packaging system metadata, etc.). /var/lock: Lock files. Files keeping track of resources currently in use. /var/log: Log files. Various logs. /var/mail: Mailbox files.
The hierarchical file system was used instead of simply expanding the flat directory for performance reasons. "A flat DOS file structure with a single directory and 10 times as many files would logically require 10 times as long to search." [2] OS/2 and Windows also support a hierarchical file system, using the same path syntax as DOS.
In computing, a directory service or name service maps the names of network resources to their respective network addresses.It is a shared information infrastructure for locating, managing, administering and organizing everyday items and network resources, which can include volumes, folders, files, printers, users, groups, devices, telephone numbers and other objects.
These folders store dynamic-link library (DLL) files that implement the core features of Windows and Windows API. Any time a program asks Windows to load a DLL file and do not specify a path, these folders are searched after program's own folder is searched. [5] " System" stores 16-bit DLLs and is normally empty on 64-bit editions of Windows.
A file name is unique so that an application can refer to exactly one file for a particular name. If the file system supports directories, then generally file name uniqueness is enforced within the context of each directory. In other words, a storage can contain multiple files with the same name, but not in the same directory. Most file systems ...