Why do old PC slow down?

How do you comment multiple lines in Matlab?

To comment out multiple lines of code, use the block comment operators, %{ and %} . The %{ and %} operators must appear alone on the lines that immediately precede and follow the block of help text. Do not include any other text on these lines. How do you comment multiple lines at once? To…

Is wildcard a character?

Wildcards are special characters that can stand in for unknown characters in a text value and are handy for locating multiple items with similar, but not identical data. Wildcards can also help with getting data based on a specified pattern match. What do you mean by wild card character? A wildcard character is a special…

What is difference between * and

The & is a unary operator in C which returns the memory address of the passed operand. This is also known as address of operator. The * is a unary operator which returns the value of object pointed by a pointer variable. Whats the difference between * and &? The & is a unary operator…

How do I open database tools?

In the Database tool window (View | Tool Windows | Database), you can work with databases and DDL data sources. You can view and modify data structures in your databases, and perform other associated tasks. Where is database tool window? In the Database tool window (View | Tool Windows | Database), you can work with…

What are the two types of subqueries?

Type of Subqueries Single row subquery : Returns zero or one row. Multiple row subquery : Returns one or more rows. Multiple column subqueries : Returns one or more columns. Correlated subqueries : Reference one or more columns in the outer SQL statement. What is subquery and its types? Type of Subqueries Single row subquery…

Can we create variable in view?

You can’t declare variables in views. User stored procedure or function instead. Can we pass parameter in view? No, in SQL Server, we cannot pass parameters to a view. And it can be considered as one main limitation of using a view in SQL Server. Moreover, even if we try to pass parameters to a…

What comes first syntax or semantics?

Semantics is the first layer of language (moving “downward” from concepts toward speech). It involves preparing concepts for syntax by placing them into categories that the rules of syntax can use to in turn prepare sentences for expression. Is semantics a part of syntax? Put simply, syntax refers to grammar, while semantics refers to meaning.…

Does a compiler check for syntax error?

All syntax errors and some of the semantic errors (the static semantic errors) are detected by the compiler, which generates a message indicating the type of error and the position in the Java source file where the error occurred (notice that the actual error could have occurred before the position signaled by the … What…

How many SQL Servers are there?

There are five editions of SQL Server: Standard, Web, Enterprise, Developer, and Express. How many database servers are there? There are a whopping 343 databases at present. Here I will shortlist ten databases from them according to the following criteria: Key Features. What is the most common SQL Server? MySQL, PostgreSQL, MariaDB, Oracle Database, and…

Does SQL Workbench use MySQL?

MySQL Workbench provides a visual console to easily administer MySQL environments and gain better visibility into databases. Developers and DBAs can use the visual tools for configuring servers, administering users, performing backup and recovery, inspecting audit data, and viewing database health. Is SQL Workbench same as MySQL? SQL is primarily used to query and operate…