MyDoom. MyDoom is considered to be the most damaging virus ever released—and with a name like MyDoom would you expect anything less? MyDoom, like ILOVEYOU, is a record-holder and was the fastest-spreading email-based worm ever.
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Alternatively referred to as a wild character or wildcard character, a wildcard is a symbol used to replace or represent one or more characters. The most common wildcards are the asterisk (*), which represents one or more characters, and question mark (?), which represents a single character. What is difference between * and & wildcard…
What does the asterisk (*) denote or mean in Python programming?
What is the meaning of * * in Python? Why do we use asterisk (*) before name in function definition in Python? If we want to accept only Keyword-Only arguments without any positional arguments, Python allows us to use * in function parameters to achieve this. Let’s see an example. The above function takes only…
What is the use of count * in SQL?
COUNT(*) returns the number of rows in a specified table, and it preserves duplicate rows. It counts each row separately. This includes rows that contain null values. What is the use of count (*)? What is the use of * in SQL? The second part of a SQL query is the name of the column…
Can MySQL hold images?
A Binary Large Object ( BLOB ) is a MySQL data type that can store binary data such as images, multimedia, and PDF files. Can a SQL database hold images? The IMAGE data type in SQL Server has been used to store the image files. Recently, Microsoft began suggesting using VARBINARY(MAX) instead of IMAGE for…
What is subquery in SQL and its types?
They help us target specific rows to perform various operations in SQL. They are used to SELECT, UPDATE, INSERT and DELETE records in SQL. There are different types of SQL subquery, like Single-row subquery, multiple row subquery, multiple column subquery, correlated subquery, and nested subquery. How many types of subquery are there in SQL? There…
What is current database in SQL Server?
Using built-in DB_NAME() SQL function, developers can get current database name that they are executing their scripts on. How do I find my current database name? Using built-in DB_NAME() SQL function, developers can get current database name that they are executing their scripts on.
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How do I find MySQL schema?
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What are the most common data types in Python?
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