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Recent questions tagged database

0 votes

1 answer 7 views

All of the following values can be stored in a column that’s defined as decimal(6,2), except

All of the following values can be stored in a column that’s defined as decimal(6,2), except A) -246.29 B) 0 C) 2479.95 D) 32492.05 What is the correct answer? Explain in detail why?

asked Jun 11 Hiba Waqar 160 points

1 vote

1 answer 16 views

Ora-02270: no matching unique or primary key for this column-list.

Problem: I am trying to learn Oracle. I have created two tables their names are Table Employee and Table USER, here is the structure. CREATE TABLE Employee ( ID NUMBER NOT NULL , USERID NUMBER, CONSTRAINT B_PK PRIMARY KEY ( ID ) ENABLE ); CREATE TABLE USER ( ... above error but because of my elementary knowledge on Oracle I am unable to fix it. Kindly guide me in fixing above Oracle error.

asked May 29 Martin K 6.6k points

1 vote

1 answer 16 views

Fatal error maximum execution time of 30 seconds exceeded in xampp.

Problem : I am very new to XAMPP, MYSQL and phpMyAdmin. I have the MYSQL table which contains nearly the 7 million records. When I try to access the big table from my phpMyAdmin I always face below error: Fatal error: Maximum execution time of 30 seconds ... a maximum execution time to the maximum possible value. I am very confused about this error so looking for help on this XAMPP error.

asked May 18 Martin K 6.6k points

1 vote

1 answer 30 views

Object of class ci_db_mysqli_result could not be converted to string.

Problem : I am beginner to CodeIgniter, If I try to execute my code then I face below error Object of class ci_db_mysqli_result could not be converted to string . Please find below my code for your reference. class MyReg extends CI_Controller{ function __construct(){ ... my above query in my model but I often face above error. I am looking for CodeIgniter experts help in fixing above error.

asked Apr 21 stewart 4k points

0 votes

2 answers 7 views

Structured programming embodies a top-down design philosophy?

Problem: Structured programming embodies a top-down design philosophy.?

asked Apr 18 ArifulIslam 5k points

0 votes

2 answers 19 views

The six clauses of the select statement must be coded in the following order:?

Problem: The six clauses of the SELECT statement must be coded in the following order:?

asked Apr 18 ArifulIslam 5k points

0 votes

1 answer 22 views

The existence of a(n) _____ entity indicates that its minimum cardinality is zero?

Problem: The existence of a(n) _____ entity indicates that its minimum cardinality is zero? A) ternary B) optional C) strong D) weak

asked Apr 18 ArifulIslam 5k points

0 votes

2 answers 17 views

In c++, a function prototype is the function heading without the body of the function?

Problem: In C++, a function prototype is the function heading without the body of the function? True False

asked Apr 18 ArifulIslam 5k points

0 votes

2 answers 12 views

The mkfs command can be issued with what switch in order to specify a filesystem type?

Problem: The mkfs command can be issued with what switch in order to specify a filesystem type?

asked Apr 18 ArifulIslam 5k points

0 votes

1 answer 12 views

In most programming languages, before an application can use a data file, it must ____?

Problem: In most programming languages, before an application can use a data file, it must ____? A. Prepare the file B. Open the file C. Read the file D. Close the file

asked Apr 18 ArifulIslam 5k points

0 votes

2 answers 10 views

What do database designers use to construct databases?

Problem: What do database designers use to construct databases?

asked Apr 18 ArifulIslam 5k points

0 votes

2 answers 11 views

____ methods are methods that exist to be used with an object created from a class?

Problem: ____ methods are methods that exist to be used with an object created from a class?

asked Apr 18 ArifulIslam 5k points

0 votes

2 answers 13 views

The process of breaking down a large program into modules is called ____?

Problem: The process of breaking down a large program into modules is called ____.?

asked Apr 18 ArifulIslam 5k points

0 votes

2 answers 10 views

Querying the database and generating reports is assisted by the application generation subsystem?

Problem: Querying the database and generating reports is assisted by the application generation subsystem? True False

asked Apr 18 ArifulIslam 5k points

0 votes

2 answers 16 views

Dns follows a centralized database model?

Problem: DNS follows a centralized database model, allowing for easier management of DNS records? True False

asked Apr 18 ArifulIslam 5k points

0 votes

2 answers 10 views

Which of the following statements is true regarding the global catalog?

Problem: Which of the following statements is true regarding the global catalog? a. The global catalog facilitates domain log ons between forests b. The global catalog only contains information about the domain in which it resides c. Only one global catalog exists per forest d. Only a single domain controller can be designated as a global catalog server

asked Apr 18 ArifulIslam 5k points

0 votes

2 answers 17 views

This refers to the combining of data and code into a single object?

Problem: This is a feature of OOP that wraps data attributes and its relevant methods in a bundle? a. polymorphism b. inheritance c. encapsulation d. abstraction

asked Apr 18 ArifulIslam 5k points

0 votes

1 answer 4 views

Traditional database application programs are written in object-oriented languages like ________?

Problem: Traditional database application programs are written in object-oriented languages like ________?

asked Apr 18 ArifulIslam 5k points

0 votes

2 answers 171 views

A ____ is a collection of related fields?

Problem: What is a group of related fields, called? Tuple Schema Records Files

asked Apr 18 ArifulIslam 5k points

0 votes

2 answers 20 views

In a database, ________ are grouped into columns?

Problem: In a database, ________ are grouped into columns? A) fields B) records C) bytes D) files

asked Apr 18 ArifulIslam 5k points

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