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How to create a table from existing table?
Create table as
e.g, To create a new table ‘N_emp' with employee names and their identification numbers only from employee table, statement is to create table N_emp as select empname, empid from employee
what is lossless & dependency preserving decomposition ?
#explain five disadvantages of a dbms..
This assignment concerns the Research database. The database ER model is shown above, where attributes are omitted for clarity. The relational model for the database is: Departm
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
The functions of DBA ?
With the help of an example display how records can be deleted and updated in QBE. (i) Increase Pay_Rate of employees along with the skill of ‘cook' by 10%. (ii) Delete employee
please i request for your assistance in developing a case-based online phone repair
Define blocks? The database system resides eternally on non-volatile storage, and is into fixed-length storage units known as blocks.
Project Description: I am updating my Javascript + HTML website with five domains for the same website I would like to know if I want to create site map and submit it in all the
In this programming assignment, you will develop a simple database of student records. Here are the requirements: 1) A student record contains a name and a number. We assume tha
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