Useful tips for everyday
When to use an index or primary key? Because they are unique and not null, these values (or value if your primary key is a…
Why permanent magnets are not used in electric motors? As an external power source passes through the rotor field, it serves as an electromagnet that…
When does a secondary replica start a log backup? Once the primary replica acquires Bulkop lock, it informs to secondary replica to start log backup.…
Can you use pyshp to read shapefile? PyShp will let you read the shapefile, but won’t help you figure out if a point is in…
What is expansion of a number? The expanded notation a number is represented as the sum of each digit in a number multiplied by its…
How do you clean oily washcloths? If you’re using laundry detergent, add a cup of baking soda or half a cup of white vinegar to…
How do you build a rental marketplace? How to create a rental marketplace with 14 features Account creation (sign up) User profiles. A product listing.…
How can use column in like operator in SQL? The SQL LIKE Operator The LIKE operator is used in a WHERE clause to search for…
What is purpose of solder mask? Solder mask is a thin layer of polymer that is put on a circuit board to protect the copper…
What should be varchar size? The size of the maximum size (m) parameter of a VARCHAR column can range from 1 to 255 bytes. If…