Technical Questions

Q:

The relationship where both the participating entities belong to same entity type is called

A) Participation B) Recursive
C) Standard D) Normal
 
Answer & Explanation Answer: B) Recursive

Explanation:

The relationship where both the participating entities belong to same entity type is called Recursive relationship

Report Error

View Answer Report Error Discuss

Filed Under: Database
Job Role: Database Administration

0 3349
Q:

Representation level data models provide the concepts that are close to the way many users perceive data

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

High level data models provide the concepts that are close to the way many users perceive data

Report Error

View Answer Workspace Report Error Discuss

Subject: Database
Job Role: Database Administration

0 3347
Q:

What is Bandwidth?

Answer

Every line has an upper limit and a lower limit on the frequency of signals it can carry. This limited range is called the bandwidth

Report Error

View answer Workspace Report Error Discuss

Subject: Networking
Job Role: Network Engineer

1 3329
Q:

If the following structure is written to a file using fwrite(), can fread() read it back successfully?

struct emp

{

    char *n;

    int age;

};

struct emp e = { "Sujay",15};

FILE *fp;

fwrite (&e, sizeof (e), 1, fp);

Answer

No, since the structure contains a char pointer while writing the structure to the disk using fwrite() only the value stored in the pointer n would get written. When this structure is read back the address would be read back but it is quite unlikely that the desired string would be present at this address in memory

Report Error

View answer Workspace Report Error Discuss

Subject: Programming

0 3318
Q:

How do you detect if two 8-bit signals are same?

Answer

Pass input to XOR and give their outputs to OR gate, if your output is 0 both 8-bit signals are same.


OR


Pass input to XNOR and give their outputs to AND gate, if your output is 1 both 8-bit signals are same. 

Report Error

View answer Workspace Report Error Discuss

Subject: Hardware

1 3311
Q:

 A transaction for which all committed changes are permanent is called:

A) atomic. B) consistent.
C) isolated. D) durable.
 
Answer & Explanation Answer: D) durable.

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Database

1 3299
Q:

What is schema?

Answer

The description of a data base is called the database schema , which is specified during database design and is not expected to change frequently . A displayed schema is called schema diagram .We call each object in the schema as schema construct.

Report Error

View answer Workspace Report Error Discuss

Subject: Database
Job Role: Database Administration

0 3295
Q:

We Can still delete a row from primary table if there are related rows in secondary table once a refferential integrity is enforced

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

Can’t delete a row from primary table if there are related rows in secondary table.

Report Error

View Answer Workspace Report Error Discuss

Subject: Database
Job Role: Database Administration

0 3277