复合索引 compound index ; [计] composite index ; CDX ; where a and

复合索引文件 CDX ; compound index file ; structural compound index file

合索引文件 Compound Index

综合索引 Comprehensive Index ; Others Index ; Heterogeneity indexes

联合索引系统 CODIS ; combined of DNA index system

复合索引、组合索引 composite index

集合索引 clustered index

混合索引 BLENDINDICES

或者集合索引 collection indexes