1. A method for accessing a database, comprising: receiving, by a server, an update query associated with the database, the update query sent from a client device requesting an update to the database, the update query specifying a column in the database and validation values for authenticating the update requested to the database; querying, by the server, a database specification for the column specified by the update query, the database specification electronically associating challenge columns in challenge tables to columns in the database; identifying, by the server, a first challenge column of the challenge columns in the database specification that is electronically associated to the column specified by the update query; identifying, by the server, a second challenge column of the challenge columns in the database specification that is electronically associated to the column specified by the update query; identifying, by the server, two challenge values from the challenge columns, a first challenge value of the two challenge values retrieved from the first challenge column in the database specification, and a second challenge value of the two challenge values retrieved from the second challenge column in the database specification; comparing, by the server, the two challenge values identified from the challenge columns to the validation values specified by the update query; determining, by the server, matches between the two challenge values identified from the challenge columns and the validation values specified by the update query; and validating, by the server, the update query for execution in response to the matches between the two challenge values and the validation values.