Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
There are three steps to install OpenCV, which are as follows −Downloading all required software and install them.Processing OpenCV for Visual Studio.Linking OpenCV with Visual Studio.Let us define these steps one by one.Step 1 - Downloading and Installing the required SoftwareWe will use OpenCV in Microsoft Visual Studio. So we must have to download Visual Studio and OpenCV.Visual StudioOpenCVCMakeLet us learn how to install this software first.Installing Visual StudioThe first step is to download the Visual Studio on your system from its official website or follow link https://visualstudio.microsoft.com/downloads/.Then click on the download button for downloading the Visual Studio. After installing ... Read More
OpenCV stands for open-source computer vision. It was generated to support a common infrastructure for computer vision operations and use system behaviour in financial products. It generally targets image processing, faces recognition, video capture, searching, and object disclosure.OpenCV is created to implement various operations including recognising and detecting faces, analysing human tasks in videos, identifying objects, recording camera movements, tracking moving objects, and combining images to create a high-resolution image for the accurate scene. Let's see the topic defining the term "Computer Vision."Computer VisionComputer vision is a flexible scientific area that manages to regenerate, preventing, and learn a 3D image from ... Read More
Let us understand when MySQL compressed protocol should be used −The compression operation is used only if both client and server support ‘zlib’ compression, and the client requests compression.The advantage of using compression is that it reduces the size of the payload.On the other hand, the disadvantage of using compression is that it increases the computation time.Performance benefits will depend largely on the size of the result set which is being sent.In addition to this, the network bandwidth and latency between the database server and its clients also matters.The larger the result set, the larger will be the latency.In other ... Read More
MySQL will make secure connections easier when it has streamlined key generation for both MySQL Community and MySQL Enterprise. This way, the security is improved by expanding support for TLSv1.1 and TLSv1.2. This also helps administrators determine if clients are connecting securely or not with enhanced visibility into connection types.Extending this importance on secure connections, MySQL server introduced a new server-side configuration option that allows MySQL administrators to restrict connections to clients who use secure transport. When we say about the connection needing secure transport, the first question that needs to be addressed is the kind of transport it uses.Secure ... Read More
Programs such as ‘mysql’ and ‘mysqldump’, that use MySQL client library have the support of MySQL connection to server with the help of many transport protocols, such as TCP/IP, Unix socket file, named pipe, shared memory, and so on.With respect to a given connection, if the transport protocol is not specified, it is determined as a separate task.ExampleConnections to localhost will result in a socket file connection on Unix and Unix-like systems, and a TCP/IP connection to 127.0.0.1 otherwise. If the protocol has to be specified in particular, it is done using the --protocol command option.The below table shows the ... Read More
Programs such as ‘mysql’ and ‘mysqldump’, that use MySQL client library have the support of MySQL connection to server with the help of many transport protocols, such as TCP/IP, Unix socket file, named pipe, shared memory, and so on. Let us understand the connection transport protocols used with MySQL −The below table shows the values permitted for --protocol and also tells the platforms where each of these values are applicable. It is to be noted that the values are not case-sensitive.--protocol valueTransport protocol usedApplicable platformsTCPTCP/IPAllSOCKETUnix socket fileUnix and Unix-like systemsPIPENamed pipeWindowsMEMORYShared memoryWindowsTCP/IPTCP/IP transport supports connections to local or remote MySQL ... Read More
Let us see how command line options can be used to establish connection with the MySQL server for clients like mysql or mysqldump.For a client program to be able to connect to the MySQL server, it must use proper connection parameters, like the name of the host where the server is running, the user name and password of the MySQL account. Every connection parameter has a default value, but it can be overridden when necessary using program options specified on the command line or in an option file.Invoke mysqlCommand to invoke mysql without specifying any explicit connection parameters is −mysqlSince ... Read More
Let us see the options that are supported by MySQL client programs which control how client programs establish connections to the server, whether connections are encrypted, compressed or not.These options can also be given on the command line or in an option file. The below mentioned command options can be used for connection establishment −--default-auth: It is the authentication plugin that needs to be used.--host: It is the host on which MySQL server is located.--password: It is the password that needs to be used when connecting to server.--pipe: It is used to connect to the server using named pipe. This ... Read More
Let us understand the default options, the options that expects values, and the ‘=’ sign in MySQL −By convention, the long forms of options which assign a value are written using an equals (=) sign. It has been shown below −mysql --host=tonfisk --user=jonFor options which require a value, i.e which doesn’t have a default value, the equal sign isn’t required. This means that the below command would be valid in such cases −mysql --host tonfisk --user jonIn both the above cases, the mysql client tries to connect to a MySQL server that is running on the host named “tonfisk” with ... Read More
Many of the MySQL programs have internal variables that are set during runtime using the SET statement. Most of these program variables can also be set at server startup with the help of the same syntax that applies to specifying the program options.Example 1The mysql has a max_allowed_packet variable which controls the maximum size of its communication buffer.To set this max_allowed_packet variable for mysql to a value of 16MB, either of the below mentioned commands can be used −mysql --max_allowed_packet=16777216 (or) mysql --max_allowed_packet=16MThe first command specifies the value in terms of bytes. On the other hand, the second command specifies ... Read More