1. A method of incorporating parcel data into a database, comprising: receiving parcel data from a first source, said parcel data including boundary coordinates; converting the parcel data from the first source into a format for storage in a common format database; receiving parcel data from a second source; converting the parcel data from the second source into the format for storage in the common format database, including determining spatial accuracy of the parcel data, projecting the parcel data into a common projection, rechecking spatial accuracy of the projected parcel data, repairing geometries of the parcel data, integrating the repaired parcel data, formatting available attribute data for the parcel data, appending the parcel data to a temporary feature class, integrating the appended parcel data, and repairing geometries of the second integrated parcel data; storing the converted parcel data from the first source and the converted parcel data from the second source in the common format database; removing, by a processor, redundant parcel data between the parcel data from the first and second source; and retrieving parcel data from the common format database in response to a user request, wherein storing the converted parcel data from the first source and the second source in the common format database includes receiving an indication to add the converted parcel data from the first source and the second source to the common format database, and loading the converted parcel data from the first source and the second source into the common format database using a spatial database interface.