A data dictionary provides a centralized repository of data definitions for an organization, ensuring consistency and accuracy in data interpretation across different systems and users. It helps improve data quality, facilitates data understanding and sharing, enhances data governance, and supports effective decision-making and data management processes.
Data dictionary is a set of meta-data which contains the definition and representation of data elements.It gives a single point of reference of data repository of an organization.Data dictionary lists all data elements but does not say anything about relationships between data elements.
example of data dictionary
Data dictionary it contains the names and description of the dictionary tables and views.
data dictionary
A data dictionary is a centralized repository of information about data,. The purpose of a data dictionary in oracle is to indicate a more general software utility than a catalogue.
Data dictionary allow the user to split data about in multiple direction
DATABASE is a repository of data...... it is a place which holds the entire data together......while DATA DICTIONARY defines the basis to distinguish the data....this can be in the form of tables, views
A data dictionary provides a comprehensive list of data elements with detailed descriptions, including their meaning, relationships, and structure. It serves as a reference guide to ensure consistency, accuracy, and understanding of data across an organization. It helps in data management, data integration, and data governance practices.
Data dictionary is a repository to store all information. Meta data is data about data. It is data that defines other data. The data dictionary can be metadata that describes some information about the database.
The integrated data dictionary is called active if it is checked by DBMS every time a data base is accessed. It is always consistent with actual data base structure. It is automatically maintained by the system.The integrated data dictionary is called passive if it is not used in day to day database processing.
data dictionary- Used to store schema descriptions and other information such as design decisions, application program descriptions, user information, usage standards, etc. Active data dictionary is accessed by DBMS software and users/DBA. Passive data dictionary is accessed by users/DBA only.
A data dictionary is a document that describes database objects such as tables, columns, and their corresponding data types. It provides information about the structure, relationships, and constraints of the database schema.