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What else can I help you with?
What is tuples in sql?
Tuple is a collection of one or more attributes or rows present in a table.
What is the means drop command?
The DROP table command of SQL lets you drop a table from database . The database requires you to empty a table before you eliminate from the database. But there is a condition for dropping a table ; it must be an empty table. syntax: 1st - delete from table-name; 2nd- drop table table-name;
In data mining how do you count True Positive False Negative False Positive and True Negative in a confusion matrix with more than two classes?
There is no automated way of calculating the TP,TN,FP,& FN. You have to determing them manually or atleast the TP. What you can do is create a hash table and enter all the true matches or the true positives. You can then call the hash table in a hash map and detemine the accuracy of your output that's what i did for my paper. Hope this helps
Which SQL keyword is used to specify a condition that rows must meet to be included in the results of an SQL SELECT query?
select
What advantages of QBE compared to SQL?
QBE is an advantage over SQL as it is a visual technique allowing non-experts to do searches, as it is simple to understand.
What is hash key?
hash key is an element in the hash table. it is the data that you will combine (mathematical) with hash function to produce the hash.
What is the name of two DDL operations in SQL?
Some of the operations performed in DDL in sql are creation of table,alteration of table,truncate a table, drop a table
What is the major advantage of a hash table?
The major advantage of a hash table is its speed. Because the hash function is to take a range of key values and transform them into index values in such a way that the key values are distributed randomly across all the indices of a hash table.
What is the optimal hash table size for achieving efficient performance when dealing with prime numbers?
The optimal hash table size for efficient performance when dealing with prime numbers is typically a prime number that is close to but not exceeding the desired capacity of the hash table. This helps reduce collisions and ensures a more even distribution of values across the table, leading to better performance.
With SQL how can you delete the records where the FirstName is Peter in the Persons Table?
To delete records where FirstName is Peter in the Persons Table, you can use the following SQL query: DELETE FROM Persons WHERE FirstName = 'Peter';
What does SQL CREATE VIEW achieve?
SQL CREATE VIEW achieves the creation of a table or tables in the SQL database. One can then create tables to the purpose they desire and fill them in with information.
How do you join a table to itself in sql?
using aliases: SELECT a.some_fields, b.other_fields FROM table a, table b WHERE a.foreign_key=b.primary_key;
In VB.NET what method is used to modify a table?
SQL UPDATE statement is used to modify a record in a table.
How do you retrieve data from table in sql by selecting month?
select * from "table-name" where month="required month";
What is the maximum number of characters allowed in a table alias in sql?
30
Which of the following do you need to consider when you make a table in SQL?
Data types
Can you transfer the record of one table to other table using sql query?
Yes Insert into table a Select * from table b Where [limit your data set]
