https://en.wikipedia.org/wiki/Oracle_Database

Oracle products follow a custom release-numbering and naming convention. The "c" in the current release, Oracle Database 23c, stands for "Cloud". Previous releases (e.g. Oracle Database 10g and Oracle9i Database) have used suffixes of "g" and "i" which stand for "Grid" and "Internet" respectively. Prior to the release of Oracle8i Database, no suffixes featured in Oracle Database naming conventions. Note that there was no v1 of Oracle Database, as co-founder Larry Ellison "knew no one would want to buy version 1".

甲骨文產(chǎn)品遵循自定義的版本編號(hào)和命名慣例。當(dāng)前版本（Oracle Database 23c）中的 "c "代表 "云"。以前的版本（如 Oracle Database 10g 和 Oracle9i Database）使用后綴 "g "和 "i"，分別代表 "網(wǎng)格 "和 "互聯(lián)網(wǎng)"。在 Oracle8i 數(shù)據(jù)庫(kù)發(fā)布之前，Oracle 數(shù)據(jù)庫(kù)命名規(guī)則中沒(méi)有后綴。請(qǐng)注意，由于聯(lián)合創(chuàng)始人拉里-埃里森 "知道沒(méi)有人愿意購(gòu)買(mǎi)第 1 版"，甲骨文數(shù)據(jù)庫(kù)沒(méi)有第 1 版。