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- Schema Changes: In an RDBMS modifying the database schema either by creating, updating or deleting tables is typically independent of the actual application. In an OODBMS based application modifying the schema by creating, updating or modifying a persistent class typically means that changes have to be made to the other classes in the application that interact with instances of that class. This typically means that all schema changes in an OODBMS will involve a system wide recompile. Also updating all the instance objects within the database can take an extended period of time depending on the size of the database.
- Language Dependence: An OODBMS is typically tied to a specific language via a specific API. This means that data in an OODBMS is typically only accessible from a specific language using a specific API, which is typically not the case with an RDBMS.
- Lack of Ad-Hoc Queries: In an RDBMS, the relational nature of the data allows one to construct ad-hoc queries where new tables are created from joining existing tables then querying them. Since it is currently not possible to duplicate the semantics of joining two tables by "joining" two classes then there is a loss of flexibility with an OODBMS. Thus the queries that can be performed on the data in an OODBMS is highly dependent on the design of the system.
What else can I help you with?
Are there any major similiarities between object oriented databases and relational databases?
In a Object Oriented Database, information is given in the form of objects as used in programming languages. "When database capabilities are combined with object programming language capabilities, the result is an object database management system (ODBMS). An ODBMS makes database objects appear as programming language objects in one or more object programming languages." (http://en.wikipedia.org/wiki/Object_database)"A relational database is a database that conforms to the relational model, and refers to a database's data and schema (the database's structure of how those data are arranged). Common usage of the term "Relational database management system" technically refers to the software used to create a relational database, but sometimes mistakenly refers to a relational database." (http://en.wikipedia.org/wiki/Relational_database)
A proportional model of three dimensional object?
A proportional model of a three dimensional object is an scale model.
What is a system based system?
A database system is a term that is typically used to encapsulate the constructs of a data model, database Management system (DBMS) and database .. (natsume)
How are the dimensions of a scale model related to the actual dimensions of the object?
When it is a scale model the model is proportional to the actual object only much smaller.
A proportional model of a three dimensional object?
the answer is scale model
List the advantage and disadvantage of database management system?
Answering "List the advantage and disadvantage of object oriented database model?" Answering "List the advantage and disadvantage of object oriented database model?"
Why firm shift from conventional database to object oriented database?
simplified standard model of database
Why object oriented database management gaining acceptance for developing applications and managing the hypermedia databases at business websites?
Why is the object -oriented database model gaining acceptance for developing applications and managing the hypermedia databases at business websites?
What are the 4 databases models?
The four primary database models are the relational model, hierarchical model, network model, and object-oriented model. The relational model organizes data into tables with rows and columns, allowing for easy querying through SQL. The hierarchical model structures data in a tree-like format, where each record has a single parent. The network model allows for more complex relationships through a graph structure, while the object-oriented model integrates database capabilities with object-oriented programming principles.
Are there any major similiarities between object oriented databases and relational databases?
In a Object Oriented Database, information is given in the form of objects as used in programming languages. "When database capabilities are combined with object programming language capabilities, the result is an object database management system (ODBMS). An ODBMS makes database objects appear as programming language objects in one or more object programming languages." (http://en.wikipedia.org/wiki/Object_database)"A relational database is a database that conforms to the relational model, and refers to a database's data and schema (the database's structure of how those data are arranged). Common usage of the term "Relational database management system" technically refers to the software used to create a relational database, but sometimes mistakenly refers to a relational database." (http://en.wikipedia.org/wiki/Relational_database)
Full form of OR AM in computer education?
In computer education, "OR" typically stands for "Object Relational," which refers to a database management system that integrates object-oriented database model features with relational database systems. "AM" can refer to "Access Method," which denotes the way data is accessed or retrieved from a database. Together, OR AM may pertain to methodologies or techniques used in object-relational database systems for efficient data management and retrieval.
Structured types in object oriented database?
A structured complex object database differs from an unstructured complex object database in that the object's structure is defined by repeated application of the type constructors provided by the OODBMS. Hence, the object structure is defined and known to the OODBMS.
Why is the object -oriented database model gaining acceptance for developing application and mananging the hypermedia database on business website?
The object-oriented database model is gaining acceptance for developing applications and managing hypermedia databases on business websites due to its ability to better handle complex data and relationships, reflecting real-world entities more naturally. This model supports multimedia data types and allows for richer representations of information, which is essential for hypermedia applications. Additionally, it promotes code reusability and modularity through encapsulation, making it easier to maintain and evolve applications over time. As businesses increasingly prioritize dynamic, interactive user experiences, the advantages of object-oriented databases become more pronounced.
Limitations and benefits of rational database model?
One of the advantages of a relational database model is that the broken keys and records and the data complexity are usually simplified. The disadvantage of the relational database model is that it requires sophisticated processing power which is very costly.
Define data models and list different types of data models?
A data model is a collection of concepts that can be used to describe the structure of a database and provides the necessary means to achieve this abstraction whereas structure of a database means the data types,relationships and constraints that should hold on the data. Data model are divided into three different groups they are 1)object based logical model 2)record based logical models 3)physical models Types: Entity-Relationship (E-R) Data Model Object-Oriented Data Model Physical Data Model functional data model
What is the difference between object-oriented database and relational database?
A Relational Database is designed and maintained following some very well defined rules of logic and algebra. It often portrays a "one to many" relationship between two sets of data, and, less often, a "one to one" and "many to many" relation can be developed. An OO database uses less rigid design parameters, and can be adjusted design-wise to fit almost any kind of data environment. In fact, I'm not absolutely sure there is such a thing as an "object oriented" database, so much as there are database objects that are created and maintained with OO programming. I know that sounds self-referenceing, but that's OO for you... A relational database uses structure to locate and display data values, rather than programming logic. With a correctly designed RDB, finding and displaying data is very simple, compared to earlier network databases. Relational databases also permit the use of JOINS to merge and match sets of data ("relations"), to glean more information from your database that would normally be available.
What is fuzzy database?
fuzzy database manages the uncertainty and vagueness associated with either entities, attributes and relationships. this can be implemented in relational database model (fuzzy extension) or using object oriented databse model.
