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The terms data dictionary and data repository indicate a more general software utility than a catalogue. A catalogue is closely coupled with the DBMS software. It provides the information stored in it to the user and the DBA, but it is mainly accessed by the various software modules of the DBMS itself, such as DDL and DML compilers, the query optimiser, the transaction processor, report ...
Sparse dictionary learning (also known as sparse coding or SDL) is a representation learning method which aims to find a sparse representation of the input data in the form of a linear combination of basic elements as well as those basic elements themselves. These elements are called atoms, and they compose a dictionary.
DTE—Data Terminal Equipment or data transfer rate; DTO—Data Transfer Object; DTP—Desktop Publishing; DTR—Data Terminal Ready or Data transfer rate; DVD—Digital Versatile Disc or Digital Video Disc; DVD-R—DVD-Recordable; DVD-ROM—DVD-Read-Only Memory; DVD-RW—DVD-Rewritable; DVI—Digital Visual Interface; DVR—Digital Video ...
Enterprise data modelling or enterprise data modeling (EDM) is the practice of creating a graphical model of the data used by an enterprise or company. Typical outputs of this activity include an enterprise data model consisting of entity–relationship diagrams (ERDs), XML schemas (XSD), and an enterprise wide data dictionary .
Data warehouses are designed to manage and store the data. Data warehouses differ from business intelligence (BI) systems because BI systems are designed to use data to create reports and analyze the information, to provide strategic guidance to management. [90] Metadata is an important tool in how data is stored in data warehouses.
Data analysis is a process for obtaining raw data, and subsequently converting it into information useful for decision-making by users. [1] Data is collected and analyzed to answer questions, test hypotheses, or disprove theories. [11] Statistician John Tukey, defined data analysis in 1961, as:
A data dictionary or database dictionary is a file that defines the basic organization of a database. [16] A database dictionary contains a list of all files in the database, the number of records in each file, and the names and types of each data field.
Data modeling is a process used to define and analyze data requirements needed to support the business processes within the scope of corresponding information systems in organizations.