OrientDB 面试题与答案
问题 16. What is the purpose of the ODocument class in OrientDB?
ODocument is a Java class in OrientDB used to represent and manipulate documents. It provides methods for accessing and modifying document properties.
问题 17. How does OrientDB support geospatial indexing?
OrientDB provides spatial indexes for geospatial data, allowing efficient querying and analysis of data based on geographic locations.
问题 18. What is the role of the OSQL language in OrientDB?
OSQL (OrientSQL) is the query language used in OrientDB for performing CRUD operations and complex queries on the database.
问题 19. Explain the concept of lightweight and heavyweight vertices in OrientDB.
A lightweight vertex stores only its own data, while a heavyweight vertex stores both its data and the data of connected edges. Lightweight vertices are more memory-efficient.
问题 20. How does OrientDB handle security and authentication?
OrientDB provides role-based access control (RBAC) for securing data. Users and roles can be defined, and permissions can be assigned at the class or record level.
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