Silicon Valley Maniac Quiz Ver4

I said the Silicon Valley Quiz, but Recently almost Apple's Quiz.
This time is Oracle's Quiz.

So

[What the IATA-Code at San Carlos Airport?]

Airport codes are two types. 3 and 4 letter alphabet letters.
Three letter code is IATA Code, and four-letter code is ICAO code.

for example,San Francisco International Airport is SFO, Narita International Airport is NRT.

And this is the San Carlos Airport's location.

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Oracle headquarters is located in the north.
Because the answer is SQL. it is handled in a computer language Oracle database.