Table schema:
CREATE TABLE table_name_45 (date VARCHAR, athlete VARCHAR, record VARCHAR)

Question: What is the Date when yelena isinbayeva was the Athlete, with a Record of 4.90m(16ft0¾in)?
SQL: SELECT date FROM table_name_45 WHERE athlete = "yelena isinbayeva" AND record = "4.90m(16ft0¾in)"