Deloitte Interview Questions, Process, and Tips

No, ABAP does not support multiple inheritance.

• ABAP only supports single inheritance through the use of interfaces and abstract classes.

• Multiple inheritance can lead to ambiguity and complexity in the code.

• However, ABAP does allow for the implementation of multiple interfaces.

• Example: a class can implement both IF_A and IF_B interfaces.

Annotations are used in CDS to define metadata and behavior of entities and fields.

• Annotations are defined using the @ symbol followed by the annotation name

• Annotations can be used to define metadata such as labels, descriptions, and visibility

• Annotations can also be used to define behavior such as validation rules and default values

• Examples of annotations include @Label, @Description, @Validation.rule, and @Default

Cardinality defines the relationship between entities in OData and CDS.

• Cardinality in OData is defined using navigation properties and can be one-to-one, one-to-many, or many-to-many.

• In CDS, cardinality is defined using associations and can be one-to-one, one-to-many, or many-to-many.

• Cardinality can be specified using symbols such as *, 1, or n.

• For example, a one-to-many relationship between a customer and their orders

Encapsulation is the concept of hiding implementation details and exposing only necessary information. Polymorphism is the ability of objects to take on multiple forms.

• Encapsulation helps in achieving data security and prevents unauthorized access to data.

• Polymorphism allows objects to be treated as instances of their own class or as instances of their parent class.

• Encapsulation and Polymorphism are key concepts in Obj...read more

Yes, a class can have multiple constructors with different parameters.

• Constructors are used to initialize objects of a class.

• Multiple constructors can be defined with different parameters.

• The constructor with the matching parameters is called when an object is created.

• Constructors can also call other constructors using 'this' keyword.

• Example: public class MyClass { public MyClass() {} public MyClass(int x) {} }

Yes, we can debug AMDP and CDS.

• We can debug AMDP using ABAP debugger or Eclipse debugger.

• We can debug CDS using Eclipse debugger or SQL Trace.

• For AMDP, we can set breakpoints in the method and debug it.

• For CDS, we can use SQL Trace to analyze the SQL statements generated by CDS view.

• Debugging helps in identifying and fixing issues in the code.

Batch calls allow multiple requests in a single HTTP call. Associations and navigation allow querying related data in OData.

• Batch calls can improve performance by reducing the number of HTTP requests.

• Associations define relationships between entities in OData.

• Navigation allows querying related entities using the $expand query option.

• Example: /Orders?$expand=Customer

• Example: /Customers('ALFKI')/Orders