Server-Side Computing Model Quiz (Lec2)
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Questions and Answers

Which of the following is a benefit of NoSQL databases?

  • Optimized for reducing data duplication
  • Requires joins tables
  • ACID compliance
  • Easy for developers to query (correct)

    • What does JSON stand for?

  • JavaScript Syntax Object Notation
  • JavaScript Object Notation (correct)
  • Java Script Object Notation
  • Java Syntax Object Notation

    • Which of the following is a characteristic of a JSON file?

  • It can only be used with JavaScript
  • It can only contain object data structures
  • It must have a '.json' extension
  • It must have a media type of 'application/json' (correct)

    • What is an object in JSON?

    <p>A collection of name/value pairs</p> Signup and view all the answers

    Which of the following is a valid value in JSON?

    <p>A boolean</p> Signup and view all the answers

    What is an array in JSON?

    <p>An ordered collection of values</p> Signup and view all the answers

    Which technology is a text-based data interchange standard and stores JavaScript objects as text?

    <p>JSON</p> Signup and view all the answers

    Which technology is a document database that stores data by documents and collections?

    <p>MongoDB</p> Signup and view all the answers

    What does the term 'NoSQL' stand for?

    <p>Not Only SQL</p> Signup and view all the answers

    Why are NoSQL databases preferred for storing unstructured data?

    <p>They have lower storage costs</p> Signup and view all the answers

    What is the main drawback of SQL databases when dealing with large amounts of data?

    <p>They cannot handle unstructured data</p> Signup and view all the answers

    What is the purpose of SQL in relational databases?

    <p>To allow users to query the RDMS using English-like statements</p> Signup and view all the answers

    Which of the following data types is used in JSON?

    <p>C, name-value pair</p> Signup and view all the answers

    What is the data type of the value 'Java' in the JSON text?

    <p>E, string</p> Signup and view all the answers

    What is the data type of the value 'third' in the JSON text?

    <p>E, string</p> Signup and view all the answers

    What is the data type of the value 'Herbert Schildt' in the JSON text?

    <p>E, string</p> Signup and view all the answers

    What is the data type of the value 'C++' in the JSON text?

    <p>E, string</p> Signup and view all the answers

    What is the data type of the value 'second' in the JSON text?

    <p>E, string</p> Signup and view all the answers

    What is the data type of the value 'E.Balagurusamy' in the JSON text?

    <p>E, string</p> Signup and view all the answers

    What is the data type of the value 'Null' in the JSON text?

    <p>H, null</p> Signup and view all the answers

    What are three technologies for database management mentioned in the text?

    <p>NoSQL, JSON, MongoDB</p> Signup and view all the answers

    What is the purpose of NoSQL databases?

    <p>To store huge amounts of unstructured data and provide flexibility to developers</p> Signup and view all the answers

    What is the main problem with SQL databases when dealing with large amounts of data?

    <p>They are difficult to handle and cannot handle unstructured data</p> Signup and view all the answers

    What are the four categories of NoSQL databases?

    <p>Document, Key-value, Wide-column, Graph</p> Signup and view all the answers

    What are the benefits of NoSQL databases?

    <p>Flexible data models, faster queries, easy for developers, relaxes ACID</p> Signup and view all the answers

    What are the two data structures used in JSON?

    <p>Object and Array</p> Signup and view all the answers

    What is the purpose of JSON?

    <p>The purpose of JSON is to provide a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate.</p> Signup and view all the answers

    What are the different data types in JSON?

    <p>The different data types in JSON are object, array, string, number, boolean, and null.</p> Signup and view all the answers

    How can arrays and objects be created in JavaScript using JSON?

    <p>Arrays and objects can be created in JavaScript using JSON by defining the elements or properties within square brackets [] or curly braces {} respectively.</p> Signup and view all the answers

    What is the significance of the null value in JSON?

    <p>The null value in JSON represents the absence of a value or an unknown value.</p> Signup and view all the answers

    Study Notes

    NoSQL Databases

    • Benefits of NoSQL databases include scalability, flexibility, and performance enhancements when dealing with large datasets.
    • NoSQL stands for “Not Only SQL,” indicating it supports various data models beyond traditional relational databases.
    • Preferred for storing unstructured data due to their ability to handle diverse formats without requiring a fixed schema.

    JSON Overview

    • JSON stands for “JavaScript Object Notation,” a lightweight data interchange format that is easy for humans to read and write.
    • JSON files are characterized by their simplicity and ability to represent structured data in a text format.
    • An object in JSON is a collection of key/value pairs enclosed in curly braces {}.
    • An array in JSON is an ordered list of values encapsulated in square brackets [].

    Valid JSON Values

    • Valid values in JSON can include strings, numbers, objects, arrays, true, false, and null.
    • The value "Java" in JSON is of the string data type.
    • The value "third" is also a string data type, while "Herbert Schildt" and "C++" are represented as strings.
    • The data type of "second" is a string, and "E.Balagurusamy" is likewise a string.
    • The value Null in JSON represents a null data type, indicating the absence of a value.

    Database Technologies

    • Technologies mentioned include JSON (data interchange standard) and NoSQL databases, which organize data in documents and collections.
    • Document databases, a type of NoSQL, store data in a format that allows flexible access to different data records.

    SQL and NoSQL Databases

    • SQL (Structured Query Language) is essential for managing and querying relational databases.
    • The main drawback of SQL databases is difficulty in managing large amounts of data, especially regarding scalability issues.
    • NoSQL databases are specifically designed to address problems encountered with SQL databases when handling large datasets.

    JSON Data Structures

    • JSON utilizes two primary data structures: objects and arrays, allowing for rich data representation.
    • The purpose of JSON is to facilitate data interchange between applications and systems in a format that is easy to parse and generate.

    Data Types in JSON

    • JSON supports various data types, including strings, numbers, booleans, arrays, objects, and null.
    • Arrays and objects can be created in JavaScript using JSON syntax, enhancing modular and responsive web design.
    • The null value in JSON has significance in representing the intentional absence of a value, which can be useful for error handling and data validation.

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    Related Documents

    Lecture2 - NoSQL, JSON, MongoDB(quiz).pdf

    Description

    Test your knowledge on three technologies for database management: NoSQL, JSON, and MongoDB. Learn about the benefits of non-relational databases, the use of JSON as a data interchange standard, and the features of MongoDB as a document database. Explore how to connect to MongoDB servers using mongo Shell and Robo 3T. Challenge yourself with questions on basic and advanced MongoDB concepts.

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