You retrieve, store, and update SQL3 datatypes the same way you do other datatypes. You use either ResultSet. getXXX or CallableStatement. getXXX methods to retrieve them, PreparedStatement. setXXX methods to store them, and updateXXX to update them. Probably 90 percent of the operations performed on SQL3 types involve using the getXXX , setXXX , and updateXXX methods. The following table shows which methods to use:
SQL3 type
getXXX method
setXXX method
updateXXX methodBLOB
getBlob
setBlob
updateBlobCLOB
getClob
setClob
updateClobARRAY
getArray
setArray
updateArrayStructured type
getObject
setObject
updateObjectREF (structured type)
getRef
setRef
updateRef
For example, the following code fragment retrieves an SQL ARRAY value. For this example, the column SCORES in the table STUDENTS contains values of type ARRAY . The variable stmt is a Statement object. ResultSet rs = stmt.executeQuery( "SELECT SCORES FROM STUDENTS WHERE ID = 2238"); rs.next(); Array scores = rs.getArray("SCORES");
The variable scores is a logical pointer to the SQL ARRAY object stored in the table STUDENTS in the row for student 2238.
If you want to store a value in the database, you use the appropriate setXXX method. For example, the following code fragment, in which rs is a ResultSet object, stores a Clob object: Clob notes = rs.getClob("NOTES"); PreparedStatement pstmt = con.prepareStatement( "UPDATE MARKETS SET COMMENTS = ? WHERE SALES < 1000000", ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE); pstmt.setClob(1, notes);
This code sets notes as the first parameter in the update statement being sent to the database. The CLOB value designated by notes will be stored in the table MARKETS in column COMMENTS in every row where the value in the column SALES is less than one million
2.Character eg-char a='a';
3.Byte eg-byte b=10;
4.Short eg-short a=20000;
5.Integer eg-int s=200000;
5.Long eg-long=73254854564;
6.Float eg-float f=54.67;
7.Double eg-double s=4.680895;
8.String eg-String s="fdfulfief";
In c language data types are used to specify the tye of data.for ex:int a;It means "a" is a variable of type integer.There are two types of data types in c.They areprimary data typessecondary data typesprimary data types are the built in data types and secondary data types are the user defined data types.eg for primary data types are int,float,char,long,double..and for secondary are arrays,structures,pointers,unions..
When we enter a variable then we know it what type it belong ,but the compiler does not know it ,for knowing it we declare data types. Storage representations & machine instructions to handle constants differ from machine to machine.The variety of data types available allow the programmer to select the type appropriate to the needs of the application as well as the machine. ANSI C supports 3 types of data types 1.Primary data types 2.Derived data types 3.User defined data types JAVA has 2 types 1.In Built data types 2.User Defined datatypes
Data is, basically, information. Armed with that knowledge, you can probably either answer your own second question or see how silly it is.
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In c language data types are used to specify the tye of data.for ex:int a;It means "a" is a variable of type integer.There are two types of data types in c.They areprimary data typessecondary data typesprimary data types are the built in data types and secondary data types are the user defined data types.eg for primary data types are int,float,char,long,double..and for secondary are arrays,structures,pointers,unions..
Int.,Float.Double,Character
right answer is in the sky.
what are the different user define data types explain with example
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the processed data is known as a information. information can be classified into following types . strategic operational statistical
The 8087 Math CoProcessor can work with two data formats: temporary real and packed decimal. Each data instruction, whether real or decimal, can be up to 80 bits long.
Programmers have to declare various data types while coding in order to inform the computer how to handle them. The types include numbers, arrays, characters, booleans and structures.