Dateisuche

Dateisuche refers to the process of locating documents, records, or data items based on their date attributes. It is a common feature in databases, search engines, content management systems and digital archives to retrieve items by creation date, modification date, event date, or other date fields.

Date fields are normalized to a common representation, typically ISO 8601. This enables consistent comparisons regardless of the original format. Dateisuche handles time zones, calendar peculiarities, and partial dates (for example only year or month). Queries can specify exact dates, date ranges, or relative periods such as "last month" or "within the last 90 days." In many systems, date constraints are combined with other predicates, producing compound searches.

Query syntax varies by technology. SQL uses BETWEEN, >=, <=, while Elasticsearch and Solr support range queries on date fields. NoSQL databases and data lakes may use operators like $gte and $lte or built-in date parsers. Natural language interfaces may translate phrases like "documents from 2023" or "between January and March 2022" into precise date ranges.

Implementation considerations include indexing strategy, date granularity (day, month, year), handling missing or uncertain dates, and performance optimizations for large datasets, such as partitioning and time-based sharding. Data quality is important: inconsistent formats, incorrect time zones, and ambiguous historical dates can degrade results.

Applications span digital libraries, email and document management, news archives, and data analytics. Related concepts are temporal querying, time-series data, and standard date formats like ISO 8601.