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  2. File-system permissions - Wikipedia

    en.wikipedia.org/wiki/File-system_permissions

    Most file systems include attributes of files and directories that control the ability of users to read, change, navigate, and execute the contents of the file system. In some cases, menu options or functions may be made visible or hidden depending on a user's permission level; this kind of user interface is referred to as permission-driven.

  3. Database dump - Wikipedia

    en.wikipedia.org/wiki/Database_dump

    A database dump contains a record of the table structure and/or the data from a database and is usually in the form of a list of SQL statements ("SQL dump"). A database dump is most often used for backing up a database so that its contents can be restored in the event of data loss.

  4. Tablespace - Wikipedia

    en.wikipedia.org/wiki/Tablespace

    A tablespace is a storage location where the actual data underlying database objects can be kept. It provides a layer of abstraction between physical and logical data, [ 1 ] and serves to allocate storage for all DBMS managed segments.

  5. Slab allocation - Wikipedia

    en.wikipedia.org/wiki/Slab_allocation

    Initially, the system marks each slab as "empty". When the process calls for a new kernel object, the system tries to find a free location for that object on a partial slab in a cache for that type of object. If no such location exists, the system allocates a new slab from contiguous virtual pages and assigns it to a cache.

  6. ext4 - Wikipedia

    en.wikipedia.org/wiki/Ext4

    ext4 (fourth extended filesystem) is a journaling file system for Linux, developed as the successor to ext3.. ext4 was initially a series of backward-compatible extensions to ext3, many of them originally developed by Cluster File Systems for the Lustre file system between 2003 and 2006, meant to extend storage limits and add other performance improvements. [4]

  7. Comparison of file systems - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_file_systems

    No limit defined No limit defined Version 6 Unix file system (V6FS) 14 bytes Any byte except NUL and / [ce] No limit defined [cf] 16 MiB (16.77 MB) [dd] 32 MiB (33.55 MB) ? Version 7 Unix file system (V7FS) 14 bytes Any byte except NUL or / [ce] No limit defined [cf] 1 GiB (1.073 GB) [de] 2 TiB (2.199 TB) ? VMFS2: 128 Any byte except NUL or ...

  8. Code Access Security - Wikipedia

    en.wikipedia.org/wiki/Code_Access_Security

    Code Access Security (CAS), in the Microsoft .NET framework, is Microsoft's solution to prevent untrusted code from performing privileged actions. When the CLR loads an assembly it will obtain evidence for the assembly and use this to identify the code group that the assembly belongs to. A code group contains a permission set (one or more ...

  9. Mutual exclusion - Wikipedia

    en.wikipedia.org/wiki/Mutual_exclusion

    Mutual exclusion algorithms ensure that if a process is already performing write operation on a data object [critical section] no other process/thread is allowed to access/modify the same object until the first process has finished writing upon the data object [critical section] and released the object for other processes to read and write upon.