Unverified50% confidenceFactExact time
Point-in-Time（PIT）数据系统需要对每个数据点同时记录事件发生时间和数据可知时间两个时间戳
1
Sources
50%
Confidence
Long-term
Relevance
7/21/2026
First Seen
Sources
Related Claims
UnverifiedPoint-in-Time（PIT）数据库需支持as-of时间点查询，即给定任意历史时刻t返回该时刻之前能获取到的最新版本数据78% similarUnverifiedBitemporal modeling requires each memory record to carry two independent timestamps: event time (the time the event actually occurred in reality) and system write time (the time the database recorded the event).76% similarUnverifiedTimescaleDB, a PostgreSQL-based extension, is designed specifically for time-series data and features an automatic chunking mechanism.66% similarUnverifiedThe generated 'Time Ledger' features three-second bookkeeping, timeline display, data visualization, budget reminders, and overspending flashing alerts.65% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/577431API
curl https://kongchang.com/api/v1/knowledge/claims/577431MCP
get_claim(id=577431)