公开(公告)号：US20210319052A1

公开(公告)日：2021-10-14

申请号：US16845921

申请日：2020-04-10

Applicant: salesforce.com, inc.

Inventor： Jacob Jonghan Park ,  Rohit Agrawal ,  Thomas Fanghaenel

IPC: G06F16/33 ,  G06F16/338 ,  G06F16/17 ,  G06F16/182 ,  G06F21/62

Abstract: Techniques are disclosed relating to probabilistic data structures. A database node may maintaining a probabilistic data structure capable of encoding database keys. The probabilistic data structure may include a plurality of levels that are each capable of storing an indication of a transition between successive characters in a database key. The database node may insert a particular database key into the probabilistic data structure and the particular database key may comprise a series of characters. The inserting may include setting, for each transition between successive characters of the series of characters, an indication in a corresponding level of the plurality of levels that is indicative of that transition. The database node may further maintain lineage information specifying one or more lineages that correspond to the transition.

公开(公告)号：US11829398B2

公开(公告)日：2023-11-28

申请号：US16845921

申请日：2020-04-10

Applicant: salesforce.com, inc.

Inventor： Jacob Jonghan Park ,  Rohit Agrawal ,  Thomas Fanghaenel

IPC: G06F15/16 ,  G06F16/33 ,  G06F16/182 ,  G06F16/338 ,  G06F16/17 ,  G06F21/62

CPC classification number: G06F16/3346 ,  G06F16/1734 ,  G06F16/182 ,  G06F16/338 ,  G06F21/6218 ,  G06F2221/0751

Abstract: Techniques are disclosed relating to probabilistic data structures. A database node may maintaining a probabilistic data structure capable of encoding database keys. The probabilistic data structure may include a plurality of levels that are each capable of storing an indication of a transition between successive characters in a database key. The database node may insert a particular database key into the probabilistic data structure and the particular database key may comprise a series of characters. The inserting may include setting, for each transition between successive characters of the series of characters, an indication in a corresponding level of the plurality of levels that is indicative of that transition. The database node may further maintain lineage information specifying one or more lineages that correspond to the transition.