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The traffic data mgmt. systems infrastructure plan describes the software, hardware, data network, and other elements that will support the TDMS. The infrastructure plan is based on the results of the gap analysis and on the project budget.
When the logical model is built, then star schema traffic architecture will be used as a default schema and dimension will be created. All these requirements will be included in the physical data model.
The objective of this project is to facilitate the administration staff of the TDMS to enhance their performance while compiling the results and maintenance of each quadrant. This system also helps in maintaining the inventory records and equipment records for the particular areas and concerns. The TDMS will help in building reports very quickly and real time data can be analyzed in no time as well as the historical data is also available.
Benefits of Hashed file Organisation 1. Insertion or search on hash-key is quick. 2. Best if equality search is required on hash-key. Drawbacks of Hashed file
What are the technique to define a schema completely ? A schema is completely define by DDL and DML query language.
A file of employee have 10,000 blocks on a cylinder of a disk with characteristics r=8ms and btt=0.6ms I want to know the cost of read inthe file under following conditions for a q
Update or Modify operation alters the existing values. If these operations alter the value that is the foreign key also, the only check need is the similar as that of the Insert op
Define lock? Lock is the most common used to execute the requirement is to permit a transaction to access a data item only if it is currently holding a lock on that item.
Differentiate between natural join and outer join? Natural join is a binary operator which is written as (R * S) where as R and S are relations. The output of the natural join
Read the description below and draw an Entity-Relationship diagram for it. You must use the symbols described in the course materials. This database will help the Parents Assocc
Section A: Use the following tables to create a database called College. Use SQL commands. Student stuid(primary) lastName firstName
Project Description: I need a point of sale for motels. It needs to run on windows and requires being network able so that we can have more than one computer using it at once.
Which language used in application programs to request data from the DBMS is referred? Language which is used in application program is DML to request data from the DBMS is ref
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