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What does a primary key do?
A primary key is a unique identifier for a record in a database table, ensuring that each entry is distinct and can be accurately referenced. It prevents duplicate records and enforces data integrity by establishing a reliable way to access and manipulate data. Additionally, a primary key can facilitate relationships between different tables in a relational database.
What is the basic difference between RDBMS and DBMS?
DBMS acronym for Database management system. There are number of DBMS like RDBMS, ORDBMS, HRDBMS etc . RDBMS is basically to define relationship between the tales and also it follows various codds rules.
What are the basic components of a database?
Tables, Entities, Attributes, Primary Keys, and Foreign Keys
A database must contain at least one what?
A database must contain at least one table, which is the fundamental structure for storing data in a relational database. Tables consist of rows and columns, where each row represents a record and each column represents a field or attribute of that record. Additionally, a database typically requires a defined schema to organize and manage the data effectively.
What is The most common database objects are?
The most common database objects include tables, views, indexes, and stored procedures. Tables store the actual data in rows and columns, while views provide a virtual table based on a query. Indexes improve the speed of data retrieval, and stored procedures are precompiled collections of SQL statements that can be executed to perform specific tasks. Together, these objects help in organizing, accessing, and managing data efficiently within a database.
What is a database made up of in access?
Relational Database
What is rdbm?
Rdbms stands for Relational database management system.It uses tables(relations) for storing the data.In mathematical terms these tables are called relations.
What are the responsibilities of the database designer?
As the name implies, a database designer develops both the logical and physical design of the database. For hierarchical databases, they define the parent-child relationships and in relational tables, the relations between tables. They also often develop validation rules, constraints and the like.
How many tables are required in access database?
one
What organizes data as a collection of tables in Access?
database
An access report can be generated from?
Reports in Access can be generated directly from database tables or through queries that have got their data from tables.
How are relationship between tables expressed in a relational database?
Tables are the basic building blocks of a relational database.
What is the database that contains tables linked by common fields?
A relational database is a database that contains tables linked by common fields. These common fields are used to establish connections between the tables and to retrieve related data across multiple tables using queries.
Difference between database and relational database?
A relational database is a type of database, so in one sense there is no difference. There are various kinds of database. A relational database is one type. Others include network and hierarchical.
What database object allows you to select specific information from one or many tables?
You are referring to the Microsoft Access Database. This allows you the ability to select specific information from one or many tables.
What is the largest database size allowed in Microsoft access 2007?
Maximum size of a single Microsoft access 2007 is 2 GB. They can be linked to other tables in a database.
Does access database allow you to save data?
Yes, Microsoft Access allows you to save data in a relational database format. Users can create tables to store data, use forms for data entry, and run queries to retrieve specific information. Additionally, Access supports various data types and relationships between tables, facilitating organized data management and retrieval.
