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Define computer database?
A computer database is a collection of information with a common connection - whether that's a stock list for a shop - or a mailing list for a mail-order company.
What is a database made up?
Database comprises of records that are related to each other. In database the data is stored in the form of tables, are called database tables .
What is a data base constraint?
#.In the field of relational database design, normalization is a systematic way of ensuring that a database structure is suitable for general-purpose querying and free of certain undesirable characteristics-insertion, update, and deletion anomalies-that could lead to a loss of data integrity. ... 1.database contraints provide a way to guarantee that;-rows in a table have valid primary or unique key value. 2.-rows in a dependent table have valid foreign key values that reference rows in a parent table. 3.-individual column values are valid
Define domain with respect to dbms?
In database technology, domain refers to the description of an attribute's allowed values. The physical description is a set of values the attribute can have, and the semantic, or logical, description is the meaning of the attribute.
Where to use database approach?
ADVANTAGESProvide very efficient "High-speed" retrievalSimplicityThe network model is conceptually simple and easy to design.Ability to handle more relationship typesThe network model can handle the one-to-many and many-to-many relationships.Ease of data accessIn the network database terminology, a relationship is a set. Each set comprises of two types of records.- an owner record and a member record, In a network model an application can access an owner record and all the member records within a set.Data IntegrityIn a network model, no member can exist without an owner. A user must therefore first define the owner record and then the member record. This ensures the integrity.Data IndependenceThe network model draws a clear line of demarcation between programs and the complex physical storage details. The application programs work independently of the data. Any changes made in the data characteristics do not affect the application program.DISADVANTAGESSystem complexityIn a network model, data are accessed one record at a time. This males it essential for the database designers, administrators, and programmers to be familiar with the internal data structures to gain access to the data. Therefore, a user friendly database management system cannot be created using the network modelLack of Structural independence.Making structural modifications to the database is very difficult in the network database model as the data access method is navigational. Any changes made to the database structure require the application programs to be modified before they can access data. Though the network model achieves data independence, it still fails to achieve structural independence.Read more: The_advantages_and_disadvantages_of_database_network_model
What type of graphical model is used to define database?
An Entity Relationship Diagram is one graphical method. A dataflow diagram is another way of looking at a system for which you will design a database.
Define the term database?
A database consists of an organized collection of data for one or more multiple uses
SQL statements that define the tables in a database are referred to as?
DDL Statments
Define various types of database users?
There are following types of users: § Database Administrators § Security Officers § Network Administrators § Application Developers § Application Administrators § Database Users
What consists of rules and standards that define how a database organizes data?
data model
What language Enables a database administrator to define schema components?
SQL (Structured Query Language) enables a database administrator to define schema components, such as tables, columns, indexes, and relationships in a database. By using SQL commands like CREATE TABLE, ALTER TABLE, and CREATE INDEX, administrators can create and modify the structure of a database according to their requirements.
When you initially create a database you define its that is you assign names and types to all the fields?
Structure
When you create a database you define its that is you assign names and types to all the fields?
When you create a database, you define its structure by assigning names and data types to all the fields. This process involves specifying the tables, fields, and relationships between them to organize and store data efficiently. By defining the database schema, you establish the blueprint for how data will be stored and accessed within the database.
Define highly collaborative relationship with select suppliers?
a collaborative relationship is where there is a a good supplier/buyer relationship
Define computer database?
A computer database is a collection of information with a common connection - whether that's a stock list for a shop - or a mailing list for a mail-order company.
What means looking for records that satisfy some criteria?
When you initially create a database, you define its filters.
Define for data?
Data is any fact of information that makes sense . Database is a collection of interrelated data.
