...
The Time Series table stores date-specific security data, such as prices, analytics, and ratings data. For example, the CUSIP or Currency for a common stock security typically remains the same for as long as the security is issued. However, the price or earnings per share would likely change on a day by day basis.
The Time Series table is not associated with a History table. Each record in the Time Series table is stored with a SECURITY_ALIAS, SRC_INTFC_INST and EFFECTIVE_DATE. A new record is usually added each day, regardless of whether there has been a change in the data.
...