Relational Database Fundamentals

A relational database is a type of DBMS that organizes data into one or more tables, where the data is stored in rows and columns. Each table represents a different entity or type of data, and the columns within the table represent the various attributes or fields of that entity.

Keys are used to define relationships between tables, allowing data to be associated across multiple tables.

One-to-one, one-to-many, or many-to-many.

<p>To ensure that the data stored in the database is consistent, accurate, and free from duplicates or contradictions.</p> Signup and view all the answers

<p>A tabular data structure is a way of organizing data into tables, with rows (records) and columns (fields). It is used to store and organize data in relational databases.</p> Signup and view all the answers

<p>It allows for the seamless integration and retrieval of data across multiple tables.</p> Signup and view all the answers

<p>Structured Query Language (SQL)</p> Signup and view all the answers

<p>Reduces data redundancy and ensures data integrity</p> Signup and view all the answers

<p>Reliability and integrity of data transactions</p> Signup and view all the answers

<p>Provides a centralized, scalable, and reliable data infrastructure</p> Signup and view all the answers

<p>Acts as a centralized repository for an organization's data, allowing for the integration of data from various sources</p> Signup and view all the answers

<p>Allows businesses to accommodate growing data needs and ensure efficient data retrieval and processing</p> Signup and view all the answers

<p>Through the use of constraints, such as primary keys, foreign keys, and referential integrity rules</p> Signup and view all the answers

<p>Provides a structured and organized way to store and access data</p> Signup and view all the answers

<p>A powerful and versatile set of commands and functions for data manipulation and retrieval</p> Signup and view all the answers

<p>Allows analysts to understand the structure and relationships of the data, leading to more effective analytical insights</p> Signup and view all the answers

<p>Relational databases integrate with various BI tools, such as data visualization software, reporting platforms, and analytics applications, enabling business analysts to extract, transform, and analyze data for data-driven decision-making.</p> Signup and view all the answers

<p>Relational databases offer advanced features for data governance, including access control, user permissions, and audit logging.</p> Signup and view all the answers

<p>The primary purpose of the relational database model is to provide a structured and organized way to store and manage data.</p> Signup and view all the answers

<p>Tables in a relational database are similar to spreadsheets or Excel worksheets, where data is stored, and each table represents a specific entity or object within the database.</p> Signup and view all the answers

<p>A primary key is a column or a combination of columns that uniquely identifies each row in a table.</p> Signup and view all the answers

<p>Foreign keys establish relationships between tables, allowing data to be linked and connected across the database.</p> Signup and view all the answers

<p>The selection and management of data types and data structures are crucial for ensuring data integrity, optimizing database performance, and facilitating effective business analytics.</p> Signup and view all the answers

<p>Relational databases typically support a wide range of data types, including numeric types, character types, date and time types, etc.</p> Signup and view all the answers

<p>Relational databases support the integration of data from different sources through the use of foreign keys, which establish relationships between tables.</p> Signup and view all the answers

<p>Data integrity is crucial in relational databases as it ensures that the data is accurate, consistent, and reliable, which is essential for effective business analytics and decision-making.</p> Signup and view all the answers

<p>to efficiently retrieve, update, and delete data</p> Signup and view all the answers

<p>ensuring that a series of operations are completed as a single unit, even in the event of system failures or errors</p> Signup and view all the answers

<p>through mechanisms like locking and isolation levels, to prevent data corruption and inconsistencies</p> Signup and view all the answers

<p>to establish and enforce relationships between data entities, such as one-to-one, one-to-many, and many-to-many relationships</p> Signup and view all the answers

<p>user authentication, access control, and auditing</p> Signup and view all the answers

<p>to ensure the availability and recoverability of data in the event of system failures or errors</p> Signup and view all the answers

<p>To improve the performance of data retrieval by creating a sorted list of values and their corresponding row locations.</p> Signup and view all the answers

<p>By deriving from one or more underlying tables, allowing users to access and manipulate data as if it were a table.</p> Signup and view all the answers

<p>They improve efficiency and maintainability by encapsulating complex logic, calculations, or data manipulation tasks.</p> Signup and view all the answers

<p>They play a crucial role in organizing and managing data, and are essential for maintaining data integrity, enabling efficient data retrieval, and supporting complex business logic.</p> Signup and view all the answers

<p>A single record in one table is associated with a single record in another table.</p> Signup and view all the answers

<p>In a one-to-one relationship, a single record is associated with a single record, while in a one-to-many relationship, a single record can be associated with multiple records.</p> Signup and view all the answers

<p>The primary key in the parent table represents the 'one' side of the relationship, while the foreign key in the child table represents the 'many' side.</p> Signup and view all the answers

<p>They provide a tabular representation of data, allowing for easy storage and management of related data entities.</p> Signup and view all the answers

<p>Through the use of relationships between tables, stored procedures and functions, and views, which enable data integration and support complex queries.</p> Signup and view all the answers

<p>It ensures that the data is organized, consistent, and easily accessible for business analytics and decision-making.</p> Signup and view all the answers

<p>To create a well-structured database that is efficient, scalable, and maintainable.</p> Signup and view all the answers

<p>To store the relationships between the related tables, containing the primary keys from both tables.</p> Signup and view all the answers

<p>Each column contains a single value, eliminating repeating groups or arrays within a single column.</p> Signup and view all the answers

<p>It prevents inconsistencies and data integrity issues.</p> Signup and view all the answers

<p>To improve query performance or address specific business requirements.</p> Signup and view all the answers

<p>Organizing data into tables, where data is stored in rows and columns.</p> Signup and view all the answers

<p>To ensure that every determinant (a set of attributes that uniquely identifies a row) be a candidate key.</p> Signup and view all the answers

<p>It improves data security and privacy by providing better control over data access and permissions.</p> Signup and view all the answers

<p>To create a more manageable and efficient database structure.</p> Signup and view all the answers

<p>It allows for changes to the data structure with minimal impact on the existing data and applications.</p> Signup and view all the answers