Database-Management-System
May 14, 2024Database-Management-System
May 14, 2024Database-Management-System
| Question 827 |
In a Hierarchical database, a hashing function is used to locate the
| Collision
| |
| Root
| |
| Foreign Key | |
| Records |
Question 827 Explanation:
→ A hierarchical database model is a data model in which the data are organized into a tree-like structure. The data are stored as records which are connected to one another through links. A record is a collection of fields, with each field containing only one value. The type of a record defines which fields the record contains.
→ The hierarchical database model mandates that each child record has only one parent, whereas each parent record can have one or more child records.
→ In order to retrieve data from a hierarchical database the whole tree needs to be traversed starting from the root node.
→ In a Hierarchical database, a hashing function is used to locate the root node.
→ The hierarchical database model mandates that each child record has only one parent, whereas each parent record can have one or more child records.
→ In order to retrieve data from a hierarchical database the whole tree needs to be traversed starting from the root node.
→ In a Hierarchical database, a hashing function is used to locate the root node.
Correct Answer: B
Question 827 Explanation:
→ A hierarchical database model is a data model in which the data are organized into a tree-like structure. The data are stored as records which are connected to one another through links. A record is a collection of fields, with each field containing only one value. The type of a record defines which fields the record contains.
→ The hierarchical database model mandates that each child record has only one parent, whereas each parent record can have one or more child records.
→ In order to retrieve data from a hierarchical database the whole tree needs to be traversed starting from the root node.
→ In a Hierarchical database, a hashing function is used to locate the root node.
→ The hierarchical database model mandates that each child record has only one parent, whereas each parent record can have one or more child records.
→ In order to retrieve data from a hierarchical database the whole tree needs to be traversed starting from the root node.
→ In a Hierarchical database, a hashing function is used to locate the root node.
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