What is index and views in SQL?

A view is simply any SELECT query that has been given a name and saved in the database. For this reason, a view is sometimes called a named query or a stored query. This not only avoids name conflicts with base tables, it helps in reading any query that uses a view. … What are …

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Why echo is faster than print in PHP?

The differences are small: echo has no return value while print has a return value of 1 so it can be used in expressions. echo can take multiple parameters (although such usage is rare) while print can take one argument. echo is marginally faster than print . Is echo slower than print? Yes, print uses …

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How do I open MySQL Port 3306 on Windows?

How do I check if port 3306 is open? To check if port 3306 is open via CurrPorts, just follow the steps above from the “NirSoft CurrPorts” section. In step 2, look for port “3306” from the list. If the port is open, it will show in the list. For PortQry.exe, run this command in …

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Your question: How do you escape a dot in JSON?

How do you escape and in JSON? JSON is based on JavaScript, but it’s not the same thing. If you’re writing an object literal inside JavaScript code, fine; if you actually need JSON, you need to use ” . With double-quoted strings, you won’t need to escape the ‘ . (And if you did want …

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What is PHP in simple words?

PHP (recursive acronym for PHP: Hypertext Preprocessor ) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML. What is PHP explain in detail? PHP is a server side scripting language that is embedded in HTML. It is used to manage dynamic content, databases, …

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Why is PHP secure?

Since PHP is so popular, PHP security is essential and the number of vulnerable PHP applications is large. Most PHP web applications share parts of code or scripts with other web applications. If the shared piece of code is found to be vulnerable, all the applications that are using it are also vulnerable. Why is …

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Can I use let in JavaScript?

var and let are both used for variable declaration in javascript but the difference between them is that var is function scoped and let is block scoped. It can be said that a variable declared with var is defined throughout the program as compared to let. Can we use let in JavaScript? The let keyword …

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Your question: Is it important to know JavaScript?

The most obvious reason for learning JavaScript is if you have hopes of becoming a web developer. Even if you haven’t got your heart set on a tech career, being proficient in this language will enable you to build websites from scratch—a pretty useful skill to have in today’s job market! Is JavaScript worth learning …

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Question: How can check SQL Server mirroring status?

Right-click the database, select Tasks, and then click Mirror. This opens the Mirroring page of the Database Properties dialog box. How do I monitor SQL Server mirroring? To launch the Database Mirroring Monitor After connecting to the principal server instance, in Object Explorer, click the server name to expand the server tree. Expand Databases, and …

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Does JavaScript override CSS?

Does JavaScript style override CSS? This line of code automatically override the global css as priority of JS applied css are always higher(even then inline css). Can JavaScript manipulate CSS? Just as you can use JavaScript to change the HTML in a web page, you can also use it to change CSS styles. The process …

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