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Show, with the help of an example, that relatively high-level transitions result when system or program is stimulated by the outside events.
In diagram below, we can observe if that initial state is state X, if event Z occurs and then state X is terminated and state Y is comes in impact.
By using the delete operation some consisting records can be deleted from a relation. To delete some definite records from the database a condition is also specified based on which
What are called jukebox systems? Jukebox systems have a few drives and numerous disks that can be loaded into single of the drives automatically.
What is vertical fragmentation? Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
1. Create the tables for the play-scheme database as specified in the TMA. 2. Enter the data as given in the spreadsheet. 3. Create queries to retrieve specified information
BCNF Boyce-Codd Normal Form A relation schema R is in BCNF if it is in 3NF and accepts an additional constraint that for every FD X A, X has to be a candidate key. If a relati
Explain what is DDL? DDL - Data Definition Language: statements used to define the database structure or schema. Some examples: CREATE - to create objects in the database ALT
why are older data base model are being replaced by new data model
Explain the Recoverable Schedule A recoverable schedule is one in which for each pair of transactions Ti and Tj such that Tj reads a data item formerly written by Ti, the comm
Consider the subsequent relation Professor (Pfcode, dept, head, time) It is assumed that (i) A professor can work in much more than one
Copy Data from One Database to another Database Project Description: I am having two MySQL databases with same tables. I just need to copy one Data from one to another dat
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