Because a correlation DBMS stores each unique data value only once, the physical database size is significantly smaller than relational or column-oriented databases, without the use of data compressio ...
Background A relational database management system provides data that represents a two-dimensional table, of columns and rows. For example, a database might have this table:EmpId Lastname Firstname Sa ...
Unordered storage typically stores the records in the order they are inserted. Such storage offers good insertion efficiency (O\left(1\right)), but inefficient retrieval times (O\left(n\right)). Typic ...
Early binary repertoires include Bacon's cipher, Braille, International maritime signal flags, and the 4-digit encoding of Chinese characters for a Chinese telegraph code (Hans Schjellerup, 1869). Com ...
A network file system is a file system that acts as a client for a remote file access protocol, providing access to files on a server. Examples of network file systems include clients for the NFS, AFS ...
Aspects of file systemsSpace managementNote: this only applies to file systems used in storage devices.Example of slack space, demonstrated with 4,096-byte NTFS clusters: 100,000 files, each 5 bytes p ...
There are numerous types of data structures:An array is a number of elements in a specific order. They are accessed using an integer to specify which element required (although the elements may be of ...
Metadata can be stored either internally, in the same file or structure as the data (this is also called embedded metadata), or externally, in a separate file or field from the described data. A data ...
Data virtualization has emerged as the new software technology to complete the virtualization stack in the enterprise. Metadata are used in data virtualization servers which are enterprise infrastruct ...
Metadata (metacontent) are defined as the data providing information about one or more aspects of the data, such as:Means of creation of the dataPurpose of the dataTime and date of creationCreator or ...
Design considerationsDatabase bits are laid out in storage in data structures and groupings that can take advantage of both known effective algorithms to retrieve and manipulate them and the storage o ...
The specification defines the data type XML, functions for working with XML, including element construction, mapping data from relational tables, combining XML fragments, and embedding XQuery expressi ...
The original development line of Saxon ended with the version 6 series. This is a series of XSLT 1.0 processors. The current version, 6.5.5, is not undergoing further development aside from maintenanc ...
eXist BenefitseXist allows software developers to persist XML data without writing extensive middleware. eXist follows and extends many W3C XML standards such as XQuery. eXist also supports REST inter ...
The language has been inspired, especially EJB3-QL, by the native Hibernate Query Language HQL.In EJB3 It has been mostly replaced by the Java Persistence Query Language.DifferencesEJB QL is a databas ...
