Which of the following best describes the object-oriented database?
A. when application query data, it receives data and programs
B. it is similar to the mesh network architecture, redundancy, and fast data retrieval
C. the body in order to access the data must know the defined access path
D. the relationship between the data entity provides the framework of organization data in the database




Answer: A
Explanation:
A. in an object-oriented database, the object will be instantiated, when there is A need for data and programs (call it) will be asked to follow the object, this is different from A relational database, in A relational database application with its own procedures to capture and processing the data retrieved from A database,
B. mesh network, mesh network) is a physical topology, have nothing to do with the database, the mesh network is a connected, for all nodes on the network to provide more path of router and switch network, in the full mesh topology, each node is directly connected to each node, this provides a greater degree of redundancy, in partial mesh topology, each node is not directly connected to the Internet is an example of a partial mesh topology,
C. a hierarchical database access - not the body of the object-oriented database - must know in order to access data access path, in a hierarchical database model, recording (record) and field (field) in a logical tree structure relate to each other, parents can have a child, more children or no children, a tree structure with branches, each branches contain a large number of data fields, in order to access the data, the application must know from which branches, which route through each level to get data,
D. the relationship between the data entities provides a framework to organize data in relational database, a relational database is composed of a two-dimensional table, each table contains unique lines, columns, and cells, each cell contains a represents a given line, the value of a particular property, these data entities relate to each other, provides the organization framework of the data,