Neo4j 面试题与答案
问题 16. What is the use of the EXTRACT function in Cypher?
The EXTRACT function in Cypher is used to extract a part of a date, time, or duration value. It allows users to retrieve specific components, such as the year or month, from temporal data.
问题 17. How does Neo4j handle unstructured data in the graph?
Neo4j allows users to store unstructured data as properties of nodes and relationships. These properties can be of various types, including text, numbers, and arrays.
问题 18. Explain the difference between a directed and an undirected relationship in Neo4j.
A directed relationship in Neo4j has a specific direction, indicating an arrow from one node to another. An undirected relationship has no direction and can be traversed in both directions.
问题 19. What is the purpose of the DELETE clause in Cypher?
The DELETE clause in Cypher is used to remove nodes, relationships, and properties from the graph. It helps in managing and maintaining the graph data.
问题 20. How does Neo4j support geospatial data?
Neo4j provides spatial types and functions for handling geospatial data. It allows users to store and query spatial data, such as points, lines, and polygons, in the graph.
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