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The database files accept the actual data and are typically the biggest in size. Depending on their shape, the tables for all the user operation can go in one database file-but that's not an unique situation because it does not create the database structure very flexible for controlling access to storage for different accounts, putting the database on different storage disk drives, or backing up and restoring just phase of the database. You must have at least one database file but generally, more than one file are needed. In terms of accepting and using the data in the other objects and tables, the number of the folders is immaterial. The database files are not variable in size and never goes bigger than the size at which they were prepared
What are audit trails? An audit trail is a log of all alters to the database along with information like which user performed the change and when the alter was performed.
Illustrate the collaboration and relationship diagram A collaboration is the society of interfaces, classes and other elements which work together to provide some cooperative b
The Maximum no of key fields that can be used in a header is?? 50
Suppose an instruction takes 1 nanosecond to execute (on average), a page fault takes 20 microseconds of processor time, and it takes 300 microseconds of disk time to read or write
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Design Documentation The Design Document shall be an extension of Requirements Analysis Design. "The Design Document will comprise a revised and much more detailed descrip
What are referential integrity constraints? A value that appears in single relation for a given set of attributes also appears for a particular set of attributes in another rel
Consider an information system designed for an online company which provides IT products and services. These include desktops, laptops, networking products, IT books, parts, and te
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
Describe Participation Constraints? Participation Constraints - The participation constraint exacts whether the existence of an entity depends on its being related to another
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