Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
The parallel array is also called the structure array.Definition − A parallel array can be defined as multiple arrays in which the ith elements are closely related, and together, they constitute an entity. An array is a fundamental feature in the C++ language. Making parallel arrays helps us in comparing two or more arrays.For instance, first_name = ['John', 'Dexter', 'Fredd', 'Hank', 'james'] last_name = ['Jocab', 'Jonas', 'smith', 'lee', 'banner'] height = [160, 148, 231, 153, 162]Approach for Making a Parallel ArraySearching and sorting are some of the essential features required to form a parallel array.SearchingSearching is based on specific values ... Read More
The floordiv() method in the pandas series constructor is used to perform integer division of two series objects (an element-wise division operation) and the Floor Division operation is also called Integer Division, which is equivalent to // in python. The method supports the substitution of missing values in any of the inputs.The method returns a series with resultant values, and the method has 3 parameters, which are fill_value, other, and level. The other parameter is nothing but the 2nd input object either series or a scalar.The fill_value parameter is used to replace a specific value in the place of missing ... Read More
The pandas series.last() method is used to return final periods based on the date offset. By applying this series.last() method we can get the final periods of the time series object. The last method is very similar to the pandas series.first() method, here we can get the final periods instead of the initial periods.The series.last() method has a parameter called offset which is used to mention the length of the offset data to select the rows within the given limit.The last() method will return a now Series object with resultant rows and it will raise the TypeError if the index ... Read More
The pandas series.last_valid_index() method is used to get the index of the last valid element from the given series object. This means the last_valid_index() method returns the index of the last non_null element of the series.It will return a single scalar based on the type of series index, and it will return None if the given series has all null/NA values or if it is empty. The method doesn’t have any parameters.Example 1Let’s create a pandas series object and retrieve the last valid index by using the last_valid_index() method.# importing packages import pandas as pd import numpy as np ... Read More
Database security defines the collective measures used to protect and secure a database or database management software from unauthorized use and malicious cyber threats and attacks. Database security is a layer of information security. It is basically concerned with physical protection of information, encryption of data in storage and data remanence issues.Database security procedures are aimed at protecting not only the data internal the database, but the database management system and some applications that access it from intrusion, misuse of information, and damage.It is a general term that contains a multitude of procedure, tools and methodologies that provide security within ... Read More
The pandas series.first_valid_index() method is used to get the index of the first valid data. This means the first_valid_index() method returns the index of the first non_null element of the series.It will return a single scalar based on the type of series index, and it will return None if the given series has all null/NA values or if it is empty. The first_valid_index() method doesn’t take any parameter.Example 1Let’s take a series object and try to retrieve the first valid index.# importing packages import pandas as pd import numpy as np # create a series s = pd.Series([None, np.nan, ... Read More
There are various types of firewalls which are as follows −Traditional network firewalls − Packet-filtering network firewalls supports essential network protection by helping to avoid unwanted traffic from receiving into the corporate network. They work by using a group of network firewall security rules to decide whether to enable or deny access to the network.It involves denying entry to some traffic except for traffic destined for definite ports corresponding to specific software running inside the corporate network and enabling or denying access to data using specific protocols or from specific IP addresses.Circuit-level GatewaysCircuit-level gateways are another simplified type of firewall ... Read More
Hardware firewalls use a physical appliance that facilitate in a manner same to a traffic router to intercept data packets and traffic requests before they are linked to the network's servers. Physical appliance-based firewalls like this excel at perimeter security by creating sure malicious traffic from external the network is intercepted before the company's network endpoints are unprotected to risk.A hardware firewall supports redundancy in firewall rules so that a mistake that accidentally enable malicious traffic by host-based firewall application doesn’t leave the complete system open. For instance, a covered device using included Microsoft Windows host-based firewall can “automatically” be ... Read More
In this tutorial, we need to solve palindrome substring queries of the given string. Solving palindrome substring queries is far more complex than solving regular queries in C++. It requires a far more complex code and logic.In this tutorial, we are provided string str and Q number of substring[L...R] queries, each with two values L and R. we aim to write a program that will solve Queries to determine whether or not substring[L...R] is a palindrome. We must decide whether or not the substring formed within the range L to R is a palindrome to solve each query. For example ... Read More
An application firewall is a type of firewall that search, monitors and controls network, web and local system access and operations to and from an application or service. This type of firewall creates it possible to control and handle the operations of an application or service that is outside to the IT environment.Application firewalls secure application communications in a same manner that network firewalls take network communications. Because they are familiar of the languages applications use to transmit data, they can deny or change invalid or suspicious activities protecting organizations against attacks.An application firewall is generally used as an improvement ... Read More