COMPUTER SCIENCE AND ENGINEERING
DATABASE MANAGEMENT SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Stored in the form of objects
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Stored hierarchically
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Stored in fixed structures
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None of the above
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Detailed explanation-1: -A relational database stores data in tables. Tables are organized into columns, and each column stores one type of data (integer, real number, character strings, date, “¦). The data for a single “instance” of a table is stored as a row.
Detailed explanation-2: -Relational databases provide a store of related data tables. These tables have a fixed schema, use SQL (Structured Query Language) to manage data, and support ACID guarantees. No-SQL databases refer to high-performance, non-relational data stores.
Detailed explanation-3: -In a relational database, each row in the table is a record with a unique ID called the key. The columns of the table hold attributes of the data, and each record usually has a value for each attribute, making it easy to establish the relationships among data points.
Detailed explanation-4: -A relational database organizes data into rows and columns, which collectively form a table. Data is typically structured across multiple tables, which can be joined together via a primary key or a foreign key.