Before starting to make a new structural database, there are some aspect we should be vary careful with which are data dictionary, database model and database queries.
A file that defines the basic organization of a database is called data dictionary. A data dictionary contains a list of all files in the database, the number of records in each file, and the names and types of each field.Data dictionary is essential for data reporting, data defining as well as for dataflow administrators.
Database models, also known as database schemas, shows the structure of the database or its format which is handled by the database management systems or DBMS. These schemas are stored in a dictionary of data and usually refer to the representation of data in a graphical format. A database model is also referred to as a theory of how a database is supposed to look like. There are numerous types of database models today and these are hierarchical model, network model, relational model, entity-relationship, object-relational model, and object model.
While,database queries are a request for information from a database. You can query the database by selecting a saved query or by creating a new query using search criteria provided. Making a database query is very useful cause. The data will be sorted within the criteria so it will be easy to find a data with a specific criteria.
After knowing the basic of making a structural database. It will be easy to make now.
no comment untill now