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What is a dataset?
A dataset is an in-memory database that is disconnected from any regular database, but has all the significant characteristics of a regular database. Datasets can have many tables, relationships, referential integrity rules, referential integrity actions, views and the equivalent of triggers. Datasets are required to give a standardized, non-proprietary means to process database views. They are especially significant for the processing of views with many multivalued paths.
Draw the precedence graph of the following schedule and determine whether the schedule is serializable. (Note that all instructions, except lock and unlock, are omitted. We assume
Modify a sequence: ALTER SEQUENCE SEQSS INCREMENT 2 MAXVALUE 3000; Removing a sequence: DROP SEQUENCE SEQSS;
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
What is assertion? Mention the forms available. An assertion is a predicate expressing a condition that we wish the database always to satisfy. Domain integrity constraints.
Given the following relations Vehicle (Reg_no, make, colour) Person(eno, name, address) Owner(eno, reg_no) Write expressions in the relational algebra to answer the following
Hashed File Organisation Hashing is the most common form of purely random access to a database or file. It is also used to access columns that do not have an index as an optimi
Define the terms 1) physical schema 2) logical schema. Physical schema: The physical schema explains the database design at the physical level, which is the lowest level of abs
What is called query processing? Query processing refers to the range of activities included in extracting data from a database.
What is DataWarehousing? Subject-oriented, meaning that the data in the database is organized so that all the data elements relating to the similar real-world event or object
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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