Which of the following is a valid SQL type character numeric float all of these?
The correct answer to the question “Which of the following is a valid SQL type” is option (d). All the above. Because Characters, Numeric, and Float are all valid SQL types.
What are the valid SQL type?
Numeric data types such as int, tinyint, bigint, float, real, etc. Date and Time data types such as Date, Time, Datetime, etc. Character and String data types such as char, varchar, text, etc. Unicode character string data types, for example nchar, nvarchar, ntext, etc.
Which of the following is not a valid SQL type numeric character float decimal?
Explanation: DECIMAL is not a valid SQL type because it is nothing but numeric only in SQL. NUMERIC has fixed precision, and scale numbers range from -10^38+1 to 10^38-1. FLOAT has floating precision number ranges from -1.79E + 308 to 1.79E + 308.
Is float a valid SQL type?
FLOAT(p) The FLOAT data type accepts approximate numeric values, for which you may define a precision up to a maximum of 64. If no precision is specified during the declaration, the default precision is 64.
Which of the following is a DCL command?
DCL commands are: GRANT – We can give certain permissions on the table (and other objects) for certain users of database, DENY – bans certain permissions from users. REVOKE – with this command we can take back permission from users.
What is trigger and types of trigger?
A trigger defines a set of actions that are performed in response to an insert, update, or delete operation on a specified table. When such an SQL operation is executed, the trigger is said to have been activated. Triggers are optional and are defined using the CREATE TRIGGER statement.
What data type is year in SQL?
If you need to store a year in the database, you would either want to use an Integer datatype (if you are dead set on only storing the year) or a DateTime datatype (which would involve storing a date that basically is 1/1/1990 00:00:00 in format).
What is primary key SQL?
In SQL, a primary key is a single field or combination of fields that uniquely defines a record. None of the fields that are part of the primary key can contain a NULL value. A table can have only one primary key. You use either the CREATE TABLE statement or the ALTER TABLE statement to create a primary key in SQL.
Which of the following is correct format to insert data in table?
If we want to create a data, we’re going to use the SQL keyword, “Insert”. The general format is the INSERT INTO SQL statement followed by a table name, then the list of columns, and then the values that you want to use the SQL insert statement to add data into those columns.
What is a set of possible data values called?
A set of possible data values is called. attribute.
What are the commands of DDL?
Data Definition Language (DDL) commands:
- CREATE to create a new table or database.
- ALTER for alteration.
- Truncate to delete data from the table.
- DROP to drop a table.
- RENAME to rename a table.
What is float data type?
In computer science, a float is a data type composed of a number that is not an integer, because it includes a fraction represented in decimal format. … Some point out that the float data type is used in computer programming when more precision is needed than what integers can provide.
What is float data type in SQL?
Float is an approximate number data type used to store a floating-point number. float (n) – n is the number of bits that are used to store the mantissa in scientific notation. Range of values: – 1.79E+308 to -2.23E-308, 0 and 2.23E-308 to 1.79E+308. Storage size: 4 Bytes if n = 1-9 and 8 Bytes if n = 25-53 – default = …
Which SQL keyword is used to retrieve a maximum value?
MAX() is the SQL keyword is used to retrieve the maximum value in the selected column.