3 Lecture - Database Architecture

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CS403

Midterm & Final Term Short Notes

Database Architecture

Database architecture refers to the structure and organization of a database system. It includes the design, layout, and components of the system, as well as the relationships between them. The architecture determines how data is stored, retriev


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Midterm & Finalterm Prepration
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  1. What is the purpose of database architecture? A) To store data B) To manage data C) To organize data D) All of the above Answer: D) All of the above What is a database schema? A) A data structure that defines the logical organization of data B) A set of rules that govern the relationships between tables C) A diagram that shows the relationships between tables D) All of the above Answer: A) A data structure that defines the logical organization of data What is a database management system (DBMS)? A) A software application that interacts with the database B) A set of tools for managing the database C) A system that provides a way to store, retrieve, and manipulate data D) All of the above Answer: D) All of the above What is a database instance? A) A running copy of a database B) A set of tables that store data C) A collection of related data D) None of the above Answer: A) A running copy of a database What is a database server? A) A computer that stores the database B) A software application that manages the database C) A system that provides access to the database D) All of the above Answer: D) All of the above What is a client-server database architecture? A) A system in which clients access a central server to retrieve data B) A system in which clients store data on their local machines C) A system in which clients share data with each other directly D) None of the above Answer: A) A system in which clients access a central server to retrieve data What is a distributed database architecture? A) A system in which data is stored on multiple servers B) A system in which data is stored on a single server C) A system in which clients share data with each other directly D) None of the above Answer: A) A system in which data is stored on multiple servers What is a peer-to-peer database architecture? A) A system in which clients access a central server to retrieve data B) A system in which clients store data on their local machines C) A system in which clients share data with each other directly D) None of the above Answer: C) A system in which clients share data with each other directly What is a database trigger? A) A program that runs automatically in response to a database event B) A query that retrieves data from the database C) A report that summarizes data from the database D) None of the above Answer: A) A program that runs automatically in response to a database event What is a database index? A) A data structure that improves the speed of data retrieval B) A set of rules that govern the relationships between tables C) A diagram that shows the relationships between tables D) None of the above Answer: A) A data structure that improves the speed of data retrieval


Subjective Short Notes
Midterm & Finalterm Prepration
Past papers included

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  1. What is database architecture? Answer: Database architecture refers to the overall structure and organization of a database system, including its design, layout, and components. What are the different types of database architecture? Answer: The different types of database architecture include client-server, peer-to-peer, and distributed architectures. What is a database schema? Answer: A database schema is a data structure that defines the logical organization of data within a database. What is a database management system (DBMS)? Answer: A database management system is software that allows users to store, retrieve, and manipulate data in a database. What is a database server? Answer: A database server is a computer system that stores and manages a database. What is a database instance? Answer: A database instance is a running copy of a database. What is a database trigger? Answer: A database trigger is a program that runs automatically in response to a specific database event. What is a database index? Answer: A database index is a data structure that improves the speed of data retrieval. What is a database transaction? Answer: A database transaction is a sequence of operations that are performed on a database as a single logical unit of work. What is the role of database architecture in database security? Answer: Database architecture plays a crucial role in database security by defining the security mechanisms that protect the database from unauthorized access, data breaches, and other security threats.

Database architecture is the overall design and organization of a database system. It encompasses everything from the physical layout of the database on disk to the logical structure of the data within it. A well-designed database architecture is crucial for ensuring that data is stored efficiently, retrieved quickly, and can be easily maintained. There are several types of database architectures, including client-server, peer-to-peer, and distributed architectures. In a client-server architecture, clients access a central server to retrieve data, while in a peer-to-peer architecture, clients share data with each other directly. Distributed architectures involve data being stored on multiple servers. A database schema is a blueprint for the logical structure of a database. It defines the tables, columns, and relationships between them. A database schema provides a standardized way of organizing data, which makes it easier to maintain and update over time. A database management system (DBMS) is software that allows users to create, manage, and manipulate databases. DBMSs provide a variety of tools for managing data, including querying, indexing, and backup and recovery tools. A database server is a computer system that stores and manages a database. It provides a way for clients to access and retrieve data from the database. A database instance is a running copy of a database that is created when the database is started. Multiple instances of a database can run simultaneously on the same server. Database triggers are programs that run automatically in response to a specific database event, such as the insertion, deletion, or modification of data. Triggers can be used to enforce business rules or to automate tasks such as sending notifications or updating other tables. Database indexes are data structures that improve the speed of data retrieval. They work by creating a separate data structure that maps the values in a specific column to the rows in the table that contain those values. When a query is executed, the database can use the index to quickly locate the relevant rows, rather than scanning the entire table. In conclusion, database architecture is a fundamental aspect of database design and management. It plays a critical role in ensuring that data is stored and retrieved efficiently and can be easily maintained over time.

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