When you issue the DELETE FROM tablename command without spe

When you issue the DELETE FROM tablename command without specifying a WHERE condition, ______ no rows will be deleted the first row will be deleted the last row will be deleted all rows will be deleted The special operator used to check whether a subquery returns any rows is ____. BETWEEN EXISTS LIKE IN The ER diagram represents the conceptual database as viewed by the end user. Connectivities and cardinalities are established by business rules. Normalization is a very important database design ingredient and the highest level is always the most desirable. Repeating groups must be eliminated by making sure that each row defines a single entity. A database language enables the user to create database and table structures to perform basic data management chores. The conditional LIKE must be used in conjunction with wildcard characters. A database language enables the user to perform complex queries designed to transform the raw data into useful information. SQL requires the use of the ADD command to enter data into a table. You cannot insert a row containing a null attribute value using SQL. You can select partial table contents by naming the desired fields and by placing restrictions on the row s to be included in the output.

Solution

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it deletes all the rows in a table when where clause is not specified.

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exists is the operator which is helpful in weather a subquery returns any rows or not

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true

because the er diagram will be helpful in designing the conceptual database which is very helpful for user.

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true

because the cardinalities describes limits of a particular and valid relationship which is helpful for the bussiness purpose.

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true

normalization is the process of removing redundancy at the same time making the data consistency.

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true

inorder to be the data in the 1st normal form we should fallow the above criteria.

6))))))))) true

we use % ,_ as wild characters

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true

it helpsto collect the data as per the query

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false

add command is used to add the column in the table.

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false

we cannot inserrt a column which is not null is specified