0
What else can I help you with?
What are the differences between centralized and distributed DBMS?
Sudipto ChattopadhyayDiscuss the distinction between centralized and decentralized conceptual database design:.Centralized and decentralized design constitute variations on the bottom‑up and top‑down approaches we discussed in the third question presented in the discussion focus. Basically, the centralized approach is best suited to relatively small and simple databases that lend themselves well to a bird's‑eye view of the entire database. Such databases may be designed by a single person or by a small and informally constituted design team. The company operations and the scope of its problems are sufficiently limited to enable the designer(s) to perform all of the necessary database design tasks:1. Define the problem(s).2. Create the conceptual design.3. Verify the conceptual design with all user views.4. Define all system processes and data constraints.5. Assure that the database design will comply with all achievable end user requirements.The centralized design procedure thus yields the design summary shown in Figure Q6.6A.Figure Q6.6A The Centralized Design ProcedureNote that the centralized design approach requires the completion and validation of a single conceptual design.Note: Figures 6.15 and 6.16 contrast the two design approaches, Figure 6.6 shows the procedure flows; demonstrate that such procedure flows are independent of the degree of centralization.In contrast, when company operations are spread across multiple operational sites or when the database has multiple entities that are subject to complex relations, the best approach is often based on the decentralized design.Typically, a decentralized design requires that the design task be divided into multiple modules, each one of which is assigned to a design team. The design team activities are coordinated by the lead designer, who must aggregate the design teams' efforts.Since each team focuses on modeling a subset of the system, the definition of boundaries and the interrelation between data subsets must be very precise. Each team creates a conceptual data model corresponding to the subset being modeled. Each conceptual model is then verified individually against the user views, processes, and constraints for each of the modules. After the verification process has been completed, all modules are integrated in one conceptual model.Since the data dictionary describes the characteristics of all the objects within the conceptual data model, it plays a vital role in the integration process. Naturally, after the subsets have been aggregated into a larger conceptual model, the lead designer must verify that the combined conceptual model is still able to support all the required transactions. Thus the decentralized design activities may be summarized as shown in Figure Q6.6B.Figure Q6.6B The Decentralized Design ProcedureKeep in mind that the aggregation process requires the lead designer to assemble a single model in which various aggregation problems must be addressed:¨ synonyms and homonyms. Different departments may know the same object by differentnames (synonyms), or they may use the samename to address differentobjects(homonyms.) The object may be an entity, an attribute, or a relationship.¨ entity and entity subclasses. An entity subset may be viewed as a separate entity by one or more departments. The designer must integrate such subclasses into a higher‑level entity.¨ Conflicting object definitions. Attributes may be recorded as different types (character, numeric), or different domains may be defined for the same attribute. Constraint definitions, too, may vary. The designer must remove such conflicts from the model.
What is a database approach and what is a file-based approach?
A database approach is a method of managing and organizing data using a structured repository that allows for efficient retrieval, storage, and manipulation of information. On the other hand, a file-based approach involves storing data in separate files and organizing them manually, which can result in redundancy, data inconsistency, and limited accessibility compared to a database system.
What is an example of a database system?
There are many of them. Here are just 10:Microsoft AccessOracleMySQLDbaseProgressBase (Open Office)IngresFilemakerInformixLotus Approach
Which programming design approach would be best to use if a line of code needed to be run repeatedly?
structed
What is a conceptual innovator?
Conceptual innovators, or finders, who pursue innovations based on bold new ideas. They tend to do their best work when they are young.
discus the main approaches for managing the design of database system that has mutliple user view?
For a large multiuser database you'll need to make it robust and fast. If it has a high I/O then a good hard drive array or SSD is best.
What is the best relational database software for mac?
The best relational database is Valentina Studio.
How did Fujio Cho change Toyota's design approach?
he began to decentralize the design process. Toyota teams located in France and Southern California competed with those in Japan for the best designs.
Does top-down or bottom-up design work better in Cpp?
Most programmers would agree that a bottom-up approach is best.
Which is the best processor for database management?
really intels line of quad cores are good. the best will always be i7 extreams but for database management it is best to have multiple processors. The database i manage and built has 4 quad cores.
Why we need conceptual design of Management Information System?
Management is a delicate system. Each decision made by management has the potential to bring big business or keep customers away. If you do something simple like playing theme park tycoon (or any of them) you will see that all the pieces have to fit perfectly in order for the operation to run smoothly. Each decision that is made could be a potential time bomb. It all has to balance and if something is slightly out of line it could impact your business for a long period of time. To study business gives you the tools to make the best decisions and to react quickly to the bad ones to alleviate the damage as soon as possible. We have a bank here where I live. It is not a tiny bank because it has branches in 3 states, but neither is it a huge conglomerate. This bank decided not to take the bailout money that was being offered. The banks that did take it are trying to give it back so fast and this one small tiny bank is waving banners saying "No Bailout Money Needed". This banner reminds its customers that they are stable and their business is growing again.
What could a database software be best used for?
These database softwares or RDBMS are used to store the database of a company or an insttution help them to use in future.
