Python comments are simple sentences that we use to make the code easier to understand. They explain your way of thinking and describe every step that you take to solve a coding problem. These sentences are not read by the Python interpreter when it executes the code. What is a comments in Python? Comments in Python is the inclusion of …
An asterisk is a star-shaped symbol (*) that has a few uses in writing. It is most commonly used to signal a footnote, but it is sometimes also used to clarify a statement or to censor inappropriate language. What does an asterisk (*) mean in your code? (2) In programming, the asterisk or “star” symbol (*) means multiplication. For example, …
The SQL Like is used when we want to return the row if specific character string matches a specified pattern. The pattern can be a combination of regular characters and wildcard characters. To return a row back, regular characters must exactly match the characters specified in the character string. When should I use like in SQL? The SQL Like is …
SQL processing is the parsing, optimization, row source generation, and execution of a SQL statement. Depending on the statement, the database may omit some of these stages. What is SQL in which process it is used? Structured Query Language (SQL) is a standardized programming language that is used to manage relational databases and perform various operations on the data in …
When we speak about semantic keywords in relation to search engine optimization (SEO), we are talking about keywords that are conceptually related to the original keyword. For example, if we were to speak about “digital marketing,” a semantically related keyword might be “SERP” or “SEO.” What are keyword examples? Keywords are the words and phrases that people type into search …
In the framework of hypothesis tests there are two types of errors: Type I error and type II errortype II errorA false negative error, or false negative, is a test result which wrongly indicates that a condition does not hold. For example, when a pregnancy test indicates a woman is not pregnant, but she is, or when a person guilty …
An error may be defined as the difference between the measured and actual values. For example, if the two operators use the same device or instrument for measurement. It is not necessary that both operators get similar results. The difference between the measurements is referred to as an ERROR. What are called errors? An error may be defined as the …
Microsoft Access is a well-known database management system produced by Microsoft and is part of the Microsoft 365 office suite. Microsoft Access combines Microsoft’s relational Jet Database Engine with software development tools and a graphic user interface (GUI). Can I use Microsoft Access as a database? With Access, you can build a database without writing code or being a database …
In MySQL, the MATCH() function performs a full-text search. It accepts a comma separated list of table columns to be searched. What RegEx does MySQL use? MySQL supports another type of pattern matching operation based on the regular expressions and the REGEXP operator. It provide a powerful and flexible pattern match that can help us implement power search utilities for …
In MySQL, you can use the or != operators to test for inequality in a query. For example, we could test for inequality using the operator, as follows: SELECT * FROM contacts WHERE last_name ‘Johnson’; What does != Mean in a query? means not equal to, != also means not equal to. How do you use not equal to in …