0
1) complexity is more compared to centralized DBMS
2) It is much more expensive to setup and maintain a DDBMS. More hardware is required the network maintenance is increased the communication costs increase and there will be additional labour costs.
3) It is much more difficult to maintain a secure network system across multiple locations. The network needs to be made secure and access to replicated data needs to be maintained across multiple sites.
4)Integrity control is more difficult
5)Lack of standard
6)lack of experience
7)more complex database design
What else can I help you with?
What is the difference between ddbms and parallel dbms?
A distributed database management system (DDBMS) manages databases that are stored on multiple computers, often in different locations. A parallel database management system (parallel DBMS) uses multiple processors to perform operations on a single database, improving performance by dividing tasks among these processors. In essence, DDBMS focuses on data distribution and replication across different sites, while parallel DBMS focuses on high-speed data processing using multiple processors.
What are the advantages and disadvantages of a DDBMS?
Organizations may be distributed across a wide geographic area. It is natural for databases to be set up to reflect this. Local areas will keep local information and this allows local users to quickly access the local database. A headquarters may also wish to make global inquiries to local data at the local regions. This allows users at one site to access data stored at other sites. Data is placed close to the users who normally access this data, it gives them local control and allows them to set up and establish local policies regarding the data use. A global administrator is responsible for the entire system and should help at a local level to develop and manage the dbms. Data in a centralized DB is inaccessible if there is a problem with the DB. However i a distributed site the local data is only inaccessible and if replication is i force then all data may be available at another site. Since data is kept local then local access is much quicker than access to a centralized DB. A DDBMS is much more complex than a centralized DB. If there are conflicts in hardware and software in use then this may cause performance issues and the sited advantages may become disadvantages. It is much more expensive to setup and maintain a DDBMS. More hardware is required the network maintenance is increased the communication costs increase and there will be additional labour costs. It is much more difficult to maintain a secure network system across multiple locations. The network needs to be made secure and access to replicated data needs to be maintained across multiple sites.
What are the disadvantages of informal learning?
Disadvantages of informal learning include lack of structure, potential for misinformation or inaccuracies, and limited opportunities for validation or recognition of learning achievements.
What are advantages and disadvantages of private warehouses?
Advantages of private warehouses include complete control over operations, security of goods, and flexibility in customization. Disadvantages may include high initial investment costs, ongoing maintenance expenses, and potential underutilization of space during off-peak periods.
Disadvantages of MIS?
Some disadvantages of Management Information Systems (MIS) include high initial setup costs, potential for data security breaches, and the need for ongoing maintenance and upgrades, which can be resource-intensive. Additionally, MIS may lead to information overload if not managed effectively, impacting decision-making processes.
What are the component of DDBMS?
The components of a Disributed DataBase Management System (DDBMS) are the Database Manager, the User Interface Request, and a Distributed Transaction Manager.
What is the difference between ddbms and parallel dbms?
A distributed database management system (DDBMS) manages databases that are stored on multiple computers, often in different locations. A parallel database management system (parallel DBMS) uses multiple processors to perform operations on a single database, improving performance by dividing tasks among these processors. In essence, DDBMS focuses on data distribution and replication across different sites, while parallel DBMS focuses on high-speed data processing using multiple processors.
What is the full form of ACID according to computer architecture?
Actually ACID is the combination of the 1# letters of the properties that DDBMS (Distributed - DBMS) possesses. A - Atomicity C - Consistency I - Isolation D - Durability This four property defines the architecture of DDBMS.
What are function of DDBMS?
Except DDBM to have the funcationality of DBMS. It also has the folliwing funcationalities: 1. Extended Communication Services. 2. Extended Data Dictionary. 3. Distributed Query Processing. 4. Extended Concurrency Control. 5. Extended Recovery Services.
What additional functions does a ddbms have over a centralized dbms?
A Distributed Database Management System (DDBMS) offers several additional functions over a centralized DBMS, including data distribution across multiple locations, which enhances data availability and reliability. It enables data replication and fragmentation for improved performance and fault tolerance. Additionally, a DDBMS supports data transparency, allowing users to access and manipulate data without needing to know its physical location, and provides mechanisms for distributed transactions to ensure consistency across the network.
What are the advantages and disadvantages of a DDBMS?
Organizations may be distributed across a wide geographic area. It is natural for databases to be set up to reflect this. Local areas will keep local information and this allows local users to quickly access the local database. A headquarters may also wish to make global inquiries to local data at the local regions. This allows users at one site to access data stored at other sites. Data is placed close to the users who normally access this data, it gives them local control and allows them to set up and establish local policies regarding the data use. A global administrator is responsible for the entire system and should help at a local level to develop and manage the dbms. Data in a centralized DB is inaccessible if there is a problem with the DB. However i a distributed site the local data is only inaccessible and if replication is i force then all data may be available at another site. Since data is kept local then local access is much quicker than access to a centralized DB. A DDBMS is much more complex than a centralized DB. If there are conflicts in hardware and software in use then this may cause performance issues and the sited advantages may become disadvantages. It is much more expensive to setup and maintain a DDBMS. More hardware is required the network maintenance is increased the communication costs increase and there will be additional labour costs. It is much more difficult to maintain a secure network system across multiple locations. The network needs to be made secure and access to replicated data needs to be maintained across multiple sites.
What is Homogeneous DDBMS?
A homogeneous Distributed Database Management System (DDBMS) uses a single DBMS product to manage the databases spread across multiple locations in a network. The data model, query language, and transaction management are consistent across all nodes, streamlining operations and ensuring data consistency. This approach simplifies administration and maintenance as all nodes are governed by the same DBMS software.
What is modular growth of distributed database systems?
Replicated Allocation ie copies of one or more database fragments are stored at several sites.
Can you provide an example of a DDBMS?
An example of a Distributed Database Management System (DDBMS) is Apache Cassandra. It is designed to handle large amounts of data across many servers, providing high availability and fault tolerance without a single point of failure. Cassandra uses a decentralized architecture, allowing for seamless scaling and robust performance in distributed environments. Another notable example is Google Bigtable, which is used for managing structured data across various applications.
What are disadvantages and disadvantages of autocracy?
what are some advantages and disadvantages of dictatorship
What are the disadvantages and disadvantages of hydroelectricity?
advantages : electricity disadvantages: no electricity
What are the disadvantages for disadvantages?
gramophone
