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Handling Bitemporal Schema Versions in Multi-temporal Environment for DataWarehouse

机译:在多时态环境中为DataWarehouse处理双时态模式版本

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Bitemporal schema versioning for DWs that maintain valid-time data or bitemporal data has already been discussed in the literature. But, the data in DWs may come from data sources having varied temporal formats, i.e., from operational sources that may or may not maintain time element or may contain only transaction-time, only valid-time or both (bitemporal time), generating multi-temporal data formats and therefore a multi-temporal environment for DW. The paper, therefore, presents a discussion on providing support for managing bitemporal schema versioning of multi-temporal data formats in DW that includes support for snapshot data and transaction data also in addition to bitemporal and valid-time data. The storage options to provide support for managing different bitemporal versions of schema and data created as a result of various revisions have not been discussed so far for bitemporal, transaction-time and snapshot data. We propose different storage solutions for maintaining various bitemporal versions of the schema with their data. The procedures for populating data in the new versions from old versions according to the storage solution adopted are also discussed for different temporal data formats. While discussing the different storage solutions, synchronous and non-synchronous mappings between data and schema versioning are also discussed. In this paper, we also propose meta-schema with bitemporal timestamps to record the changes occurring in the structure of schema for multiple temporal data formats.
机译:文献中已经讨论了用于维护有效时间数据或双时态数据的DW的双时态模式版本控制。但是,DW中的数据可能来自具有不同时间格式的数据源,即来自可能维护或可能不维护时间元素或仅包含事务处理时间,仅有效时间或两者(时间时间)的操作源,时间数据格式,因此是DW的多时间环境。因此,本文提出了有关提供支持以管理DW中的多时态数据格式的时态模式版本控制的讨论,该支持除了支持时态和有效时间数据外,还包括对快照数据和事务数据的支持。迄今为止,尚未针对双时态,事务处理时间和快照数据讨论为管理由于各种修订而创建的模式和数据的不同双时态版本提供支持的存储选项。我们提出了不同的存储解决方案,以使用其数据维护模式的各种双时态版本。还针对不同的时间数据格式讨论了根据采用的存储解决方案从旧版本填充新版本数据的过程。在讨论不同的存储解决方案时,还讨论了数据和架构版本控制之间的同步和非同步映射。在本文中,我们还提出了带有二进制时间时间戳的元模式,以记录针对多种时间数据格式的模式结构中发生的变化。

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