1. A method for generating a graphical representation of a query optimization process, the method comprising: parsing, by a computing device, a search space log, the log comprising an order in time in which one or more access plans were evaluated, a property for an object of one of the one or more evaluated access plans, and a best access plan selected from the one or more evaluated access plans; presenting the one or more evaluated access plans on a time axis and a cost axis of a timeline, organized on the timeline corresponding to the order in time in which the one or more evaluated access plans were evaluated; identifying the best access plan on the timeline; and displaying a graphical representation of the time axis and the cost axis.