A computer system receives a request to combine tabular data of a first table with tabular data of a second table. The computer system creates a profile for the second table indicating organization of types of data within the second table. The computer system determines a placement for at least one data element of the tabular data of the first table, into the second table, such that the placement agrees, to at least a specified confidence level, with the organization of types of data within the second table indicated by the profile. The computer system adds the at least one data element to the second table based on the determined placement.