To select all column from the table the syntax is:
A) select all from table_name
B) select * from table_name
C) select from table_name
D) Non of the above

1 Answer

Answer :

B) select * from table_name

Related questions

Description : Which of the syntax is correct for insert statement? i) insert into values ii) insert into (column list) values A) i-only B) ii-only C) Both of them D) None of them

Last Answer : C) Both of them

Description : Which can be used to delete all the rows if a table? A) Delete * from table_name B) Delete from table_name C) Delete table_name D) all rows cannot be deleted at a time.

Last Answer : A) Delete * from table_name

Description : Consider a CUSTOMERS database table having a column CITY filled with all the names of Indian cities (in capital letters). The SQL statement that finds all cities that have GAR somewhere in its name, ... *from customers where city like %GAR%'; (D) Select *from customers where city as '%GAR';

Last Answer : Answer: C

Description : An Assertion is a predicate expressing a condition we wish database to always satisfy. The correct syntax for Assertion is : (A) CREATE ASSERTION ‘ASSERTION Name’ CHECK ‘Predicate’ (B) CREATE ASSERTION ‘ASSERTION NAME’ (C) CREATE ASSERTION, CHECK Predicate (D) SELECT ASSERTION

Last Answer : (A) CREATE ASSERTION ‘ASSERTION Name’ CHECK ‘Predicate’ 

Description : The given maximization assignment problem can be converted into a minimization problem by (A) subtracting each entry in a column from the maximum value in that column. (B) subtracting each entry in the table ... value in that column. (D) adding maximum value of the table to each entry in the table.

Last Answer : (B) subtracting each entry in the table from the maximum value in that table.

Description : Consider the relations R(A,B) and S(B,C) and the following four relational algebra queries over R and S: I. πA,B(R⋈S) II. R⋈πB(S) III. R∩(πA(R) Χ πB(S)) IV. πA,R.B(R Χ S) where R.B refers to ... IV are the same query. (C) I, II and IV are the same query. (D) I, III and III are the same query.

Last Answer : (D) I, III and III are the same query.

Description : In a relational database model, NULL values can be used for all but which one of the following? (A) To allow duplicate tuples in the table by filling the primary key column(s) with NULL. (B) To ... D) To fill a column in a tuple when that column does not really exist for that particular tuple.

Last Answer : (A) To allow duplicate tuples in the table by filling the primary key column(s) with NULL.

Description : What is the output of the following code? a={1:"A",2:"B",3:"C"} print(a.get(5,4)) a) Error, invalid syntax b) A c) 5 d) 4

Last Answer : d) 4

Description : Suppose d = { john :40, peter :45}, what happens when we try to retrieve a value using the expression d[ susan ]? a) Since susan is not a value in the set, Python raises a KeyError ... Python raises a KeyError exception d) Since susan is not a key in the set, Python raises a syntax error

Last Answer : c) Since “susan” is not a key in the set, Python raises a KeyError exception

Description : What is the output of the following piece of code? >>> a=(0,1,2,3,4) >>> b=slice(0,2) >>> a[b] a) Invalid syntax for slicing b) [0,2]. c) (0,1) d) (0,2)

Last Answer : c) (0,1)

Description : What is the output of the following piece of code when executed in Python shell? >>> a=("Check")*3 >>> a a) (‘Check’,’Check’,’Check’) b) * Operator not valid for tuples c) (‘CheckCheckCheck’) d) Syntax erro

Last Answer : c) (‘CheckCheckCheck’)

Description : Suppose list1 is [4, 2, 2, 4, 5, 2, 1, 0], which of the following is correct syntax for slicing operation? a) print(list1[0]) b) print(list1[:2]) c) print(list1[:-2]) d) all of the mentioned

Last Answer : d) all of the mentioned

Description : Process of removing errors called a) Error Free b) Debug c) Syntax Error d) Exception

Last Answer : b) Debug

Description : What will be the output of the following segment of the program? main( ) { char *s = “hello world”; int i = 7; printf(“%, *s”, i, s); } (A) Syntax error (B) hello w (C) hello (D) o world

Last Answer : Answer: Marks given to all

Description : The syntax of capturing events method for document object is (A) CaptureEvents() (B) CaptureEvents(Orgs eventType) (C) CaptureEvents(eventType) (D) CaptureEvents(eventVal)

Last Answer : (C) CaptureEvents(eventType)

Description : Which one of the following describes the syntax of prolog program ? I. Rules and facts are terminated by full stop (.) II. Rules and facts are terminated by semicolon (;) III. Variables names must start with upper case alphabets. ... alphabets. Codes : (A) I, II (B) III, IV (C) I, III (D) II, IV

Last Answer : (C) I, III

Description : Which phase of compiler generates stream of atoms ? (A) Syntax analysis (B) Lexical Analysis (C) Code generation (D) Code optimization 

Last Answer : (A) Syntax analysis

Description : What is the output of the following program ? (Assume that the appropriate pre-processor directives are included and there is no syntax error) main() { char S[ ] = "ABCDEFGH"; printf ("%C",* (& ... Base address of S is 1000 */ } (A) ABCDEFGH1000 (B) CDEFGH1000 (C) DDEFGHH1000 (D) DEFGH1000

Last Answer : (D) DEFGH1000

Description : Javascript and Java has similar name because ........... is/are true. (a) Javascripts syntax is loosely based on Java's syntax (b) Javascript is stripped down version of Java (c) Java and Javascript are originated from Island of Java ... only (B) (a), (b) and (c) (C) (a) and (b) (D) (a) and (c)

Last Answer : Answer: A

Description : Consider the following statements related to compiler construction: I. Lexical Analysis is specified by context-free grammars and implemented by pushdown automata. II. Syntax Analysis is specified by regular expressions and implemented by ... Only l (2) Only ll (3) Both I and II (4) Neither I nor Il

Last Answer : Answer: 4

Description : The statement in SQL which allows to change the definition of a table is (A) Alter. (B) Update. (C) Create. (D) select

Last Answer : (A) Alter.

Description : Consider the table Student(stuid, name, course, marks). Which one of the following two queries is correct to find the highest marks student in course 5? Q.1. Select S.stuid From student S Where not exists (select * from student ... ) Q.1 (B) Q.2 (C) Both Q.1 and Q.2 (D) Neither Q.1 nor Q.2

Last Answer : (B) Q.2 Explanation: First query gives stuid of students whose marks are greater than all students taking course 5. Second query gives stuid of students whose marks are greater than any student taking ... comparison is between maximum of marks by any student in course 5. So the answer is option D.

Description : Consider the following three SQL queries (Assume the data in the people table) : (a) Select Name from people where Age>21; (b) Select Name from people where Height>180; (c) Select Name from people where (Age>21) or (Height ... number of rows returned by the SQL query (c) ? (A) 3 (B) 7 (C) 10 (D) 21

Last Answer : (C) 10

Description : Consider a database table R with attributes A and B. Which of the following SQL queries is illegal ? (A) SELECT A FROM R; (B) SELECT A, COUNT(*) FROM R; (C) SELECT A, COUNT(*) FROM R GROUP BY A; (D) SELECT A, B, COUNT(*) FROM R GROUP BY A, B;

Last Answer : (B) SELECT A, COUNT(*) FROM R;

Description : Given a Non-deterministic Finite Automation (NFA) with states p and r as initial and final states respectively transition table as given below  The minimum number of states required in Deterministic Finite Automation (DFA) equivalent to NFA is (A) 5 (B) 4 (C) 3 (D) 2

Last Answer : (C) 3 

Description : What is the right access 2007 sql syntax for adding the last record of another table?

Last Answer : INSERT INTO samples (id_sample) SELECT Last(project.Id) AS LastOfId FROM project I tested this and it works. One nice thing about Access is you can use the graphical query designer to test your syntax. The ... View if you prefer text over the GUI. It will not run or save your query if errors exist

Description : Write Syntax for create table.

Last Answer : Syntax of Create table: CREATE TABLE table_name(  column1 datatype (size),  column2 datatype(size),  column3 datatype(size),  ..... columnNdatatype(size)  );

Description : ……………….. contains information that defines valid values that are stored in a column or data type. A) View B) Rule C) Index D) Default

Last Answer : C) Index

Description : In RDBMS, the constraint that no key attribute (column) may be NULL is referred to as: (A) Referential integrity (B) Multi-valued dependency (C) Entity Integrity (D) Functional dependency

Last Answer : (C) Entity Integrity

Description : Select the correct order for the different phases of virus execution. i) Propagation phase ii) Dormant phase iii) Execution phase iv) Triggering phase A) i, ii, iii, and iv B) i, iii, ii and iv s D) ii, iii, iv and i

Last Answer : C) ii, i, iv an iii

Description : Select operator is not a unary operator. ii) Project operator chooses subset of attributes or columns of a relation. A) i-True, ii-False B) i-True, ii-True C) i-False, ii-True D) i-False, ii-False

Last Answer : C) i-False, ii-True

Description : ……………… clause is an additional filter that is applied to the result. A) Select B) Group-by C) Having D) Order by

Last Answer : C) Having

Description : Which of the following operations can be performed by using FTP. i) Connect to a remote host ii) Select directory iii) Define the transfer mode iv) List file available A) i, and ii only B) i, ii and iii only C) ii, iii and iv only D) All i, ii, iii and iv

Last Answer : C) ii, iii and iv only

Description : Which of the following is a legal expression in SQL? (A) SELECT NULL FROM EMPLOYEE; (B) SELECT NAME FROM EMPLOYEE; (C) SELECT NAME FROM EMPLOYEE WHERE SALARY = NULL; (D) None of the above

Last Answer : B) SELECT NAME FROM EMPLOYEE;

Description : Select the ‘False’ statement from the following statements about Normal Forms: (A) Lossless preserving decomposition into 3NF is always possible (B) Lossless preserving decomposition into BCNF is always possible (C) Any relation with two attributes is in BCNF (D) BCNF is stronger than 3NF

Last Answer : (B) Lossless preserving decomposition into BCNF is always possible

Description : Suppose ORACLE relation R(A, B) currently has tuples {(1, 2), (1, 3), (3, 4)} and relation S(B, C) currently has {(2, 5), (4, 6), (7, 8)}. Consider the following two SQL queries SQ1 and SQ2 ... (A) 2 and 6 respectively (B) 6 and 2 respectively (C) 2 and 4 respectively (D) 4 and 2 respectively

Last Answer : (D) 4 and 2 respectively

Description : Which of the following information not included in memory table? A) The allocation of main memory to process. B) The allocation of secondary memory to process C) Any information needed to manage virtual memory D) Any information about the existence of file

Last Answer : D) Any information about the existence of file

Description : Drop Table cannot be used to drop a table referenced by a …………… constraint. A) Local Key B) Primary Key C) Composite Key D) Foreign Key

Last Answer : D) Foreign Key

Description : ............ is a special type of stored procedure that is automatically invoked whenever the data in the table is modified. A) Procedure B) Trigger C) Curser D) None of the above

Last Answer : B) Trigger

Description : In RDBMS, Data is presented as a collection of ............ A) Table B) Attributes C) Relations D) Entities

Last Answer : C) Relations

Description : …………….. is the complex search criteria in the where clause. A) Substring B) Drop Table C) Predict D) Predicate

Last Answer : D) Predicate

Description : …………….. is used to determine whether of a table contains duplicate rows. A) Unique predicate B) Like Predicate C) Null predicate D) In predicate

Last Answer : A) Unique predicate

Description : The one guideline to be followed while designing the database is A) A database design may be ambiguous. B) Unrelated data should be in the same table so that updating the data will be easy. C) It should avoid/reduce the redundancy. D) An entity should not have attributes.

Last Answer : C) It should avoid/reduce the redundancy.

Description : SQL server stores index information in the ………… system table A) systindexes B) systemindexes C) sysind D) sysindexes

Last Answer : D) sysindexes