You are looking at coding that includes the steps “DROP TABLE IF EXISTS”, “CREATE TABLE”, “SELECT”, and “FROM”. What is being constructed?A.Selecting data from a dropped data tableB.Creating a new data table that has not been constructed beforeC.Repeated execution transformation of a data table
Question
You are looking at coding that includes the steps “DROP TABLE IF EXISTS”, “CREATE TABLE”, “SELECT”, and “FROM”. What is being constructed?A.Selecting data from a dropped data tableB.Creating a new data table that has not been constructed beforeC.Repeated execution transformation of a data table
Solution
The code you're looking at is constructing a new data table. The "DROP TABLE IF EXISTS" command is used to delete a table if it already exists. This is to avoid an error which would occur if you try to create a table that already exists. The "CREATE TABLE" command is then used to create a new table. The "SELECT" and "FROM" commands are used to select data from a specific table or tables. So, the overall process is deleting an existing table (if it exists), creating a new table, and then selecting data from a specified table or tables.
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