Big data can be defined as a concept used to describe a large volume of data, which are both structured and unstructured, and that gets increased day by day by any system or business. In this lesson, you will learn about what is Big Data? Its importance and its contribution to large-scale data handling.
MongoDB provides a utility called mongoexport to its users, through which users can export data from MongoDB databases to a JSON file format or a CSV file format. In this chapter, you will learn about mongoexport command, which is used in MongoDB to export the data from the database.
NoSQL can be defined as an approach to database designing, which holds a vast diversity of data such as key-value, multimedia, document, columnar, graph formats, external files, etc. NoSQL is purposefully developed for handling specific data models having flexible schemas to build modern applications.
So far, you have used the selectors; they are used for targeting particular elements or collective elements having a specific ID or class. It is quite a powerful feature, but what if you wish to limit this feature to some specific part of the page? In this chapter, you will learn about the descendant combinator and its working.
Matrix multiplication is another important program that makes use of the two-dimensional arrays to multiply the cluster of values in the form of matrices and with the rules of matrices of mathematics. In this C program, the user will insert the order for a matrix followed by that specific number of elements. This same thing will be repeated for the second matrix.
Reversing a string means the string that will be given by the user to your program in a specific sequence will get entirely reversed when the reverse of a string algorithm gets implemented in that particular input string. In the below-mentioned example, two approaches have been used to reverse a string in C language.
Styling is an important concept that brings CSS to the top of web designing. Like other elements, selectors in CSS also help in selecting the styles in elements you want to put for designing your web pages. In this chapter, you will get to know about the concept of selectors in CSS.