DB Repair RE: terms, taxonomy, term_rel., commmeta.

using up to date ver of WP (4.2.2 as of this date), i realize from ./public_html/error_log that i’m throwing a lot of DB errors. attempts to repair the problem (e.g. solutions i’ve recovered via search engine) have failed. the following tables simply don’t exist, as reported when attempting to use the ./admin/../repiar.php script:

wp_terms: Table 'my_dbname.wp_terms' doesn't exist<br />
wp_term_taxonomy: Table 'my_dbname.wp_term_taxonomy' doesn't exist<br />
wp_term_relationships: Table 'my_dbname.wp_term_relationships' doesn't exist<br />
wp_commentmeta: Table 'my_dbname.wp_commentmeta' doesn't exist

what is the recommended solution?
(e.g. if i had the SQL to create such tables, could i not simply execute it via phpMyAdmin?)

Thank you!