Data Engineer

You have two related tables: first_table and second_table. You want to execute the command TRUNCATE TABLE second_table CASCADE; to delete all rows from second_table and all dependent data. What consequences might this command have? create table first_table ( id integer primary key ); create table second_table ( id serial primary key, first_table_fk integer references first_table(id) ); - The second_table_id_seq sequence will be reset to its initial value. - All records from first_table that are related through a foreign key to second_table will be deleted. - Existing indexes for second_table will be dropped and automatically recreated. - When inserting into second_table afterwards, the default value for id may start from an incorrect value. - An error will occur because the CASCADE command is forbidden for tables with foreign keys.

After cloning a project with submodules, some directories are empty. Which command will download the submodules' contents? git pull --recurse-submodules git checkout --submodules git fetch --submodules git init submodules git submodule update --init

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