Latest Answer : Dr. E.F. Codd, an IBM researcher, first developed the relational data model in 1970. In 1985, Dr. Codd published a list of 12 rules that concisely define an ideal relational database, which have provided a guideline for the design of all relational database ...
Latest Answer : find the rowid for the duplicate row and delete the max id no keeping the min id. thats it... ...
If we have a table which is accessed by multiple users and two or more user's are simultaniously trying to modify the table. Then what happens and how can we manage such situations?
How to delete multiple tables at a time? e.g like c* means all the tables starts with c have to be deleted at a time.
Create a query that will display the total number of employees and of that total the number who were hired in 1980, 1981, 1982, and 1983. Give appropriate column headings.
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