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OCA Oracle Database SQL Expert Exam Guide by Steve O'Hearn

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Glossary

1GL First-generation language. The ones and zeros that computers use to communicate. Binary language.

2GL Second-generation language. Assembler language.

3GL Third-generation language. A general category of computer programming languages that tend to support structured or object-oriented programming in a manner that is closer to the spoken word than 2GLs. Common 3GLs: Java, C, FORTRAN, PHP, Perl.

4GL Fourth-generation language. Closer to the spoken word than 3GLs. The most well-known and widely used 4GL is SQL.

administrator See database administrator.

aggregate A single value representing any number of other values.

alias An alternative name for something. Example: “Joe” is an alias for “Joseph”.

alphabetic Describes the letters of ...

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