how many defensive back players were picked ?
CREATE TABLE table_203_229 (
    id number,
    "pick #" number,
    "nfl team" text,
    "player" text,
    "position" text,
    "college" text
)
SELECT COUNT("player") FROM table_203_229 WHERE "position" = 'defensive back'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: how many defensive back players were picked ? ### Input: CREATE TABLE table_203_229 (
    id number,
    "pick #" number,
    "nfl team" text,
    "player" text,
    "position" text,
    "college" text
) ### Response: SELECT COUNT("player") FROM table_203_229 WHERE "position" = 'defensive back'