A table ‘student’ has 3 columns and 10 rows and another table ‘student 2’ has the same columns as student but 15 rows. 5 rows are common in both the tables. If we take union, what is the degree and cardinality of the resultant table ?
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A sitar wire is replaced by another wire of same length and material but of three times the earlier radius.
1/3. Since frequency α√(1/m) m=πr2p
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What is the difference between ‘Rows’ and ‘Columns’ in a table?
Distinguish between data and information are as follows: Data Information It is a raw fact. It is a process form of data. It considers facts symbols, images for reference or analysis. It considers knowledge derived from...
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Key field is a unique identifier for each record. It is defined in the form of (a) rows (b) columns
(b) Key is a data item that allows you to uniquely identify individual occurrences which is defined as the column or set of columns.
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In a table, columns are called ………. and rows are called ………… .
In a table, columns are called fields and rows are called records.
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In the rules attribute, the………… value helps to display a table border only between rows.
In the rules attribute, the rows value helps to display a table border only between rows.
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A table ‘customer’ has 10 columns but no row. Later, 10 new rows are inserted and 3 rows are deleted in the table.
Degree = 10 [no. of cols] Cardinality = 10-3 = 7 [no. of rows]
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A table ‘student’ has 4 columns and 10 rows and ‘student 2’ has 5 columns and 5 rows.
Degree = 4 x 5 = 20 [no. of columns] Cardinality = 10 x 5 = 50 [no. of rows]
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Deepika wants to remove all rows from the table BANK. But he needs to maintain the structure of the table.
DELETE FROM BANK.
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What are horizontal rows and vertical columns in a periodic table known as?
The horizontal rows are known as periods and vertical columns in the periodic table are known as groups
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Two rods A and B of the same metal, same length, but one solid and the other hollow, are heated to the same rise in temperature.
Two rods A and B of the same metal, same length, but one solid and the other hollow, are heated to the same rise in temperature. Then both the rods A...
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