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MySQLi is also known as MySQL improved Extension. It is a relational SQL database management system. It is often used inside PHP to provide an interface with the MySQL databases. Some of the reasons why MySQLi is famous are given below − MySQLi uses the standard form of the SQL language. MySQLi is free as it is released under an open source license. MySQLi can be easily used with PHP which is the most famous language for web development. MySQLi is a very powerful language and it can handle the functionality of powerful database packages. MySQLi can work with ... Read More
In this section we will see how to create the website alarm system using Python. Problem Statement Open a website URL on the browser by taking a website URL and time. When the system time reaches the specified time, the webpage will be opened. We can store different web pages in our bookmark sections. Sometimes we need to open some web pages every day on a specific time to do some work. For that purpose, we can set this type of website alarm to do the work. In this case we are using some standard library modules like sys, web ... Read More
We cannot use a function for default value in MySQL, but we can use triggers. Let us see an example. First, we will create a table. The CREATE command is used to create a table. mysql> CREATE table TbLFunctionTrigger - > ( - > id int, - > username varchar(100) - > ); Query OK, 0 rows affected (0.55 sec) The following is the syntax to create a trigger and include a default value. CREATE TRIGGER anyName BEFORE INSERT ON yourTableName FOR EACH ROW ... Read More
Definition Fiber to the home (FTTH) is a technology to deploy optical fibers in the local loop of the telephone networks to the users’ home for providing high-speed data connectivity. It replaces the existing copper wires as telephone lines to the customer premises by optical fibers that allow much greater bandwidth and less noisy connectivity. FTTH Council The FTTH Council is a non-profit organization to provide advanced FTTH solutions. Its members comprise of manufacturers, organizations and municipalities who build and install equipments for FTTH systems. The purpose of the Council is to share knowledge and build industry consensus on FTTH. ... Read More
In Python, there is a module called Decimal, which is used to do some decimal floating point related tasks. This module provides correctly-rounded floating point arithmetic. To use it at first we need to import it the Decimal standard library module. import decimal In this section we will see some important functions of the Decimal module. The square root function sqrt() and Exponent function exp() The sqrt() method is used to calculate the square root of a given decimal type object. And the exp() method returns the e^x value for the given x as Decimal number. Example Code ... Read More
Morse Code Translator is used in Cryptography. It is named by Samuel F. B. Morse. By this technique we convert a message to a series of dots, commas, "-", "/". This technique is very simple. Every alphabet in English signifies a series of ".", ", ", "/", "-". We just encrypt the message from message to symbols and decrypt from symbols to English. The dictionary is given below 'A':'.-', 'B':'-...', 'C':'-.-.', 'D':'-..', 'E':'.', 'F':'..-.', 'G':'--.', 'H':'....', 'I':'..', 'J':'.---', 'K':'-.-', 'L':'.-..', 'M':'--', 'N':'-.', 'O':'---', 'P':'.--.', 'Q':'--.-', 'R':'.-.', 'S':'...', 'T':'-', 'U':'..-', 'V':'...-', 'W':'.--', 'X':'-..-', 'Y':'-.--', 'Z':'--..', '1':'.----', '2':'..---', '3':'...--', '4':'....-', '5':'.....', ... Read More
Initialization When you assign a value to a variable when it is declared, it is called Initialization. Here is an example − int val = 50; For array initialization, you may need a new keyword, whereas to initialize a variable, you do not need it. Instantiation When you create a new object in C# for a class using the new keyword, then it is called instantiation. Use the new operator to instantiate a class in C#. Here is an example showing two objects of Student class created using new keyword − Student s1 = new Student(); Student s2 = new Student();
Trunks Definition Trunks are a large-bandwidth communication channels connecting switching centres, forming the core of the telephone network. A trunk comprises of a cluster of broadcast frequencies that are suitable for long haul communication of many voice and data signals simultaneously. Features The characteristic features of a trunk are − They carry digital information as opposed to analog signals carried by local loops. They are designed for both voice and data transmission. They can carry millions of calls simultaneously over long distances. They have very high bandwidth. They generally comprise of a cluster of fiber optic cables bundled together ... Read More
In this assignment we work with files. Files are everywhere in this Universe. In computer system files are essential part. Operating system consists a lot of files. Python has two types of files-Text Files and Binary Files. Here we discuss about Text Files Here we focus some of the important functions on files. Number of words Number of characters Average word length Number of stop words Number of special characters Number of numeric Number of uppercase words We have a test file "css3.txt", we are working on that file Number of words When we count number of ... Read More
Precision states the difference between float and double data type. Float is a single precision (32 bit) floating point data type. Double is a double precision (64 bit) floating point data type. Range of a float type − -3.4 x 1038 to + 3.4 x 1038 Range of a double type is − (+/-)5.0 x 10-324 to (+/-)1.7 x 10308 Default value of a float type − 0.0F Default value of a double type − 0.0D