Dynamic schema in MongoDB makes _____ easier for applications.(1 Point)inheritancepolymorphismBoth (A) and (B)encapsulation

Which principle of object-oriented databases allows for the extension of existing data models with new functionality without altering the existing structure?EncapsulationInheritancePolymorphismComposition

Which of the following is/are correct?试题 6选择一项或多项：a.Dynamo doesn’t require a rigid schema before inserting data.b.MongoDB supports the concepts of primary key and foreign key.c.Google's Bigtable does not support schema.d.The concept of schema in MongoDB is flexible, which allows programmers to modify data structure at runtime.

Documents in MongoDB map directly to objects in your programming language. Modify your schema as your apps grow over time.

Which of the following is/are correct?Question 11Select one or more:Select one or more:a.Google's Bigtable does not support schema.b.MongoDB supports the concepts of primary key and foreign key.c.Dynamo doesn’t require a rigid schema before inserting data.d.The concept of schema in MongoDB is flexible, which allows programmers to modify data structure at runtime.

Which of the following advantages we lose by using multiple inheritances?Both Dynamic binding & PolymorphismConstructorPolymorphismDynamic binding