8. A system comprising: a processor; and a computer-readable medium having stored therein instructions which, when executed by the processor, cause the processor to perform a method comprising: comparing received speech with a precompiled grammar to yield a match result, wherein the precompiled grammar is based on a database; when the match result is above a threshold, returning a result based on matching data; and when the match result is below the threshold, comparing the received speech with a dynamically compiled grammar that is based only on new data added to the database after the precompiled grammar is compiled.
8. A system comprising: a processor; and a computer-readable medium having stored therein instructions which, when executed by the processor, cause the processor to perform a method comprising: comparing received speech with a precompiled grammar to yield a match result, wherein the precompiled grammar is based on a database; when the match result is above a threshold, returning a result based on matching data; and when the match result is below the threshold, comparing the received speech with a dynamically compiled grammar that is based only on new data added to the database after the precompiled grammar is compiled. 9. The system of claim 8 , wherein the dynamically compiled grammar is separate from the precompiled grammar.