Those tags are not required. It is considered good form to use them if the table is used to represent data, which is what a table should be used for. If a table is used for laying out content they are typically omitted.
W3C
Those tags are not required. It is considered good form to use them if the table is used to represent data, which is what a table should be used for. If a table is used for laying out content they are typically omitted.
W3C