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Questions and Answers
What type of data has a fixed and predefined format, such as rows and columns in a table?
What type of data has a fixed and predefined format, such as rows and columns in a table?
Which language is commonly used for manipulating structured data?
Which language is commonly used for manipulating structured data?
What type of data has some organizational properties but is not as rigid as structured data?
What type of data has some organizational properties but is not as rigid as structured data?
Which type of data is often stored in relational databases like MySQL?
Which type of data is often stored in relational databases like MySQL?
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What does a Data Management System (DMS) manage?
What does a Data Management System (DMS) manage?
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Study Notes
Structured Data
- Has a fixed and predefined format, typically organized in rows and columns similar to a table.
- Examples include spreadsheets and databases, where each field is clearly defined.
Language for Manipulating Structured Data
- SQL (Structured Query Language) is predominantly used to manipulate structured data.
- Allows users to create, read, update, and delete data in relational database systems.
Semi-Structured Data
- Contains some organizational properties but lacks the strict schema of structured data.
- Examples include JSON, XML, and HTML documents, where data is organized but not in a rigid format.
Relational Databases
- Commonly store structured data, using a format that facilitates efficient data retrieval and manipulation.
- Examples include MySQL, PostgreSQL, and Oracle, which use tables to represent entities and relationships.
Data Management System (DMS)
- Manages data storage, retrieval, and organization, ensuring data integrity and security.
- Can refer to various types of systems, including databases and data warehouses, which help manage large amounts of data effectively.
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Description
Quiz: Data Management Systems 1. What is a Data Management System (DMS)? a) A software for managing data b) A hardware for storing data c) A network for sharing data d) An algorithm for analyzing data Answer: a) A software for managing data
