Primary key field gives us permission to record duplicate entry. -Technology

Primary key field gives us permission to record duplicate entry. -Technology
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1 Answer

Answer :

False A primary key is a key which identifies records uniquely in a table so it does not give us permission to record duplicate entry.
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Related questions

…………. is a field which is used as a primary key and numbers each record sequentially. -Technology

Description : …………. is a field which is used as a primary key and numbers each record sequentially. -Technology

Last Answer : AutoNumberis a field which is used as a primary key and numbers each record sequentially.

A text field is initially 40 characters long and one record has an entry in this field in MS_Access database. -Technology

Description : A text field is initially 40 characters long and one record has an entry in this field in MS_Access database. -Technology

Last Answer : Since the new field length is 20 characters long. So, this field will contain only left 20 characters including spaces and the remaining data will be discarded. Thus, the data from the right side of the field will be lost.

Primary key is used to …………….. identify the record. -Technology

Description : Primary key is used to …………….. identify the record. -Technology

Last Answer : Primary key is used to uniquelyidentify the record.

Key field is a unique identifier for each record. It is defined in the form of (a) rows (b) columns -Technology

Description : Key field is a unique identifier for each record. It is defined in the form of (a) rows (b) columns -Technology

Last Answer : (b) Key is a data item that allows you to uniquely identify individual occurrences which is defined as the column or set of columns.

A primary key field does not allow numbers. -Technology

Description : A primary key field does not allow numbers. -Technology

Last Answer : False Primary key has to identify a unique value which can be present in a table, in a number form also. It means primary key field allow number too.

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 avoid confusion with actual legitimate data values like 0 (zero) for integer columns and ‘’ (the empty string) for string columns. (C) To leave columns in a tuple marked as “unknown” when the actual value is unknown. (D) To fill a column in a tuple when that column does not really “exist” for that particular tuple.

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.

What do you mean by the Entry Required field information? -Technology

Description : What do you mean by the Entry Required field information? -Technology

Last Answer : Entry Required field decides whether entering data in the field is necessary or not. So, if Entry Required is set to Yes, then that field must have some value in it. By default, Entry Required is set to Yes.

The ………….. field property makes data entry compulsory, so that the field cannot be left blank. -Technology

Description : The ………….. field property makes data entry compulsory, so that the field cannot be left blank. -Technology

Last Answer : TheRequired field property makes data entry compulsory so that the field cannot be left blank.

Is there a way to have iCal automatically duplicate my entry for one calander into my google calander?

Description : Is there a way to have iCal automatically duplicate my entry for one calander into my google calander?

Last Answer : Yes! Download Calaboration, a Google utility. It will guide you through the setup process. It’s very easy.

The primary advantage of key-to-tape data entry system is A) A large percentage of editing can be performed at the time of data entry B) Key verification is easily performed C) The tape is reusable D) Keying errors can be detected as they occur.

Description : The primary advantage of key-to-tape data entry system is A) A large percentage of editing can be performed at the time of data entry B) Key verification is easily performed C) The tape is reusable D) Keying errors can be detected as they occur.

Last Answer : Answer : C

The primary advantage of key-to-tape data entry system is a. A large percentage of editing can be performed at the time of data entry b. Key verification is easily performed c. The tape is reusable d. Keying errors can be detected as they occur

Description : The primary advantage of key-to-tape data entry system is a. A large percentage of editing can be performed at the time of data entry b. Key verification is easily performed c. The tape is reusable d. Keying errors can be detected as they occur

Last Answer : The tape is reusable

The primary advantage of key-to-tape data entry system is a. A large percentage of editing can be performed at the time of data entry b. Key verification is easily performed c. The tape is reusable

Description : The primary advantage of key-to-tape data entry system is a. A large percentage of editing can be performed at the time of data entry b. Key verification is easily performed c. The tape is reusable

Last Answer : c. The tape is reusable

What is a primary key? -Technology

Description : What is a primary key? -Technology

Last Answer : A field which uniquely identifies each record in a table is known as the primary key. e.g. emp id is the primary key of the Employee table.

Define primary key with an example. -Technology

Description : Define primary key with an example. -Technology

Last Answer : A field which uniquely identifies each record in a table is known as the primary key. e.g. emp id is the primary key of the Employee table.

What is primary key? Give an example. -Technology

Description : What is primary key? Give an example. -Technology

Last Answer : A field which uniquely identifies each record in a table is known as the primary key. e.g. emp id is the primary key of the Employee table.

What is a primary key in database? Give an example. -Technology

Description : What is a primary key in database? Give an example. -Technology

Last Answer : A field which uniquely identifies each record in a table is known as the primary key. e.g. emp id is the primary key of the Employee table.

Give one advantage of using primary key. -Technology

Description : Give one advantage of using primary key. -Technology

Last Answer : A primary key uniquely identifies the record in the table.

What is the significance of a primary key? -Technology

Description : What is the significance of a primary key? -Technology

Last Answer : A primary key cannot allow null values and must have a unique index.

What is the utility of primary key in database? Write distinct features of primary keys. -Technology

Description : What is the utility of primary key in database? Write distinct features of primary keys. -Technology

Last Answer : The primary key is used to uniquely identify the record in a database. It can be a column or a set of columns in the table.Main features of the primary key are as follows:1. It must contain a unique value for each record of the table.2. It does not contain null values.

Which of the following fields will not make a suitable primary key? (a) A customer’s account number -Technology

Description : Which of the following fields will not make a suitable primary key? (a) A customer’s account number -Technology

Last Answer : (b) From the given options, the data field can not be set as a primary key because it can’t be fixed for an object.

The candidate key, which is not used as primary key is called ………….. key. -Technology

Description : The candidate key, which is not used as primary key is called ………….. key. -Technology

Last Answer : The candidate key, which is not used as primary key is calledalternate key.

A primary key value can be NULL. -Technology

Description : A primary key value can be NULL. -Technology

Last Answer : False The primary key of table is used to uniquely identify each and every row in the table. So, its all keys and columns must be defined as NOT NULL.

A foreign key is a primary key in another table. -Technology

Description : A foreign key is a primary key in another table. -Technology

Last Answer : True When a table’s primary key field is added to a related table in order to create the common field which relates two tables, it is called a foreign key in the related table.

What is a primary key? How do we set a primary key? -Technology

Description : What is a primary key? How do we set a primary key? -Technology

Last Answer : Primary key is the key which is used to uniquely identify the records into the table. To set the primary key you have to follow the steps given below:Step 1 Select the field that you want ... 2 Click Primary Key button from the Design tab.orRight click on the selected field and select Primary Key.

Define primary key. How do you set it in MS_Access? -Technology

Description : Define primary key. How do you set it in MS_Access? -Technology

Last Answer : Primary key is the key which is used to uniquely identify the records into the table. To set the primary key you have to follow the steps given below:Step 1 Select the field that you want ... 2 Click Primary Key button from the Design tab.orRight click on the selected field and select Primary Key.

What is a primary key in a table? -Technology

Description : What is a primary key in a table? -Technology

Last Answer : A primary key is a special relational database table column (or combination of columns) designated to uniquely identify each & every table record. It does not contain NULL & duplicate values

Write any one similarity and one difference between primary key and unique Constraint. -Technology

Description : Write any one similarity and one difference between primary key and unique Constraint. -Technology

Last Answer : Similarity: Column with both the constraints will only take unique values.Difference: Column with Primary key constraints will not be able to hold NULL values while Column with Unique constraints will be able to hold NULL values.

Identify the primary key column of Train and Reservation. -Technology

Description : Identify the primary key column of Train and Reservation. -Technology

Last Answer : (i) Train-TrainIdReservation-RefNo(ii) (d) By default, the UNION operator selects all the values.

Write any one similarity and one difference between primary key and unique Constraint -Technology

Description : Write any one similarity and one difference between primary key and unique Constraint -Technology

Last Answer : Similarity: Column with both the constraints will only take unique values.Difference: Column with Primary key constraints will not be able to hold NULL values while Column with Unique constraints will be able to hold NULL values.

Group of attributes/field in a database is known as a: a) Data Entry b) Record c) File d) None of These

Description : Group of attributes/field in a database is known as a: a) Data Entry b) Record c) File d) None of These

Last Answer : b) Record

Distinguish between a record and a field in a table, with an example. -Technology

Description : Distinguish between a record and a field in a table, with an example. -Technology

Last Answer : Distinguish between a record and a field in a table are as follows:RecordFieldIt is a collection of data items, which represent a complete unit of information about a thing or a person.It is an ... called a record.e.g. if Employeeis a table, then empId, empName, department, salary arethe fields.

Which field property specifies whether the field can be left empty when entering data into a record? -Technology

Description : Which field property specifies whether the field can be left empty when entering data into a record? -Technology

Last Answer : Required property.

What is the name of the column heading for each category in a data source? (a) Data field (b) Field (c) Field name (d) Record -Technology

Description : What is the name of the column heading for each category in a data source? (a) Data field (b) Field (c) Field name (d) Record -Technology

Last Answer : (c) Field name is the name of the column heading for each category in a data source.

On the _____ of the each month a statement of cases pending at the end of the preceding month should be prepared by_____ in form______in duplicate by meant of carbonic paper, the top copy being retained for office record and the lower copy being submitted to the ____as the statement of complaint. a) 5th , divisional inspector, Cpt-3, Head of the circle b) 1st , First class postmaster, Cpt-3, Supdt of post office c) 10th , HRO, Cpt3, Head of the circle d) None of these

Description : On the _____ of the each month a statement of cases pending at the end of the preceding month should be prepared by_____ in form______in duplicate by meant of carbonic paper, the top copy being retained for office ... , Supdt of post office c) 10th , HRO, Cpt3, Head of the circle d) None of these

Last Answer : d) None of these

When steel almirahs, cabinets, cupboard or locker furnished with body locks (which are furnished by their manufacturer with duplicate keys) are supplied to any office, i.e. Post, Mail, Record or Divisional Office for storage of records, forms etc., the duplicate keys of the same should be kept locked up in the custody of a) The manager and the Superintendent b) Head clerk and Stock clerk of divisional office. c) Both the A and B d) None of these

Description : When steel almirahs, cabinets, cupboard or locker furnished with body locks (which are furnished by their manufacturer with duplicate keys) are supplied to any office, i.e. Post, Mail, Record or Divisional Office ... clerk and Stock clerk of divisional office. c) Both the A and B d) None of these

Last Answer : b) Head clerk and Stock clerk of divisional office.

When steel almirahs, cabinets, cupboard or locker furnished with body locks (which are furnished by their manufacturer with duplicate keys) are supplied to any office, i.e. Post, Mail, Record or Divisional Office for storage of records, forms etc., the duplicate keys of the same should be kept locked up in the a) Post office at postmaster custody b) In circle office c) Divisional office d) None of these

Description : When steel almirahs, cabinets, cupboard or locker furnished with body locks (which are furnished by their manufacturer with duplicate keys) are supplied to any office, i.e. Post, Mail, Record or ... ) Post office at postmaster custody b) In circle office c) Divisional office d) None of these

Last Answer : c) Divisional office

Where can I find an experienced locksmith who can duplicate my broken key in my area?

Description : Where can I find an experienced locksmith who can duplicate my broken key in my area?

Last Answer : You have to take the key to the company you bought the car from. The keys have special chips in them unique to each car. You'll have to go to the dealer to get it replicated.

The duplicate key should be sent by a) Hand of an responsible official b) Ordinary post c) Registered post d) Insured post

Description : The duplicate key should be sent by a) Hand of an responsible official b) Ordinary post c) Registered post d) Insured post

Last Answer : d) Insured post

The Order Book of a Record Office: (A) Is a permanent record and should not be destroyed at all (B) May be destroyed as usual after expiry of the preservation period (C) May not be destroyed without the special permission of the Superintendent (D) May not be destroyed without the special permission of Head of the Circle / Region

Description : The Order Book of a Record Office: (A) Is a permanent record and should not be destroyed at all (B) May be destroyed as usual after expiry of the preservation period (C) May not be ... the Superintendent (D) May not be destroyed without the special permission of Head of the Circle / Region

Last Answer : (D) May not be destroyed without the special permission of Head of the Circle / Region

. The record not to be destroyed without the special permission of the Head of the Circle a) Order book of a record office b) Nominal roll of token holder c) Work paper regarding which enquiry is in progress and not fully decided d) All the above

Description : . The record not to be destroyed without the special permission of the Head of the Circle a) Order book of a record office b) Nominal roll of token holder c) Work paper regarding which enquiry is in progress and not fully decided d) All the above

Last Answer : d) All the above

A Text data type cannot allow number entry. -Technology

Description : A Text data type cannot allow number entry. -Technology

Last Answer : False As, it can include both text as well as numbers.

A term that is used in spreadsheet which forces a line break in a cell when the cell entry is too large to fit in the cell. -Technology

Description : A term that is used in spreadsheet which forces a line break in a cell when the cell entry is too large to fit in the cell. -Technology

Last Answer : (a) A term that is used in spreadsheet which forces a line break in a cell when the cell entry is too large to fit in the cellWrap.

A cell entry can be edited either in the cell or in the formula bar. -Technology

Description : A cell entry can be edited either in the cell or in the formula bar. -Technology

Last Answer : True There are two ways to edit the data which has entered in the cell, i.e. in the cell or in the formula bar.

The primary succession refers to the development of communities on a (a) forest clearing after devastating fire (b) newly-exposed habitat with no record of earlier vegetation (c) freshly cleared crop field (d) pond, freshly filled with water after a dry phase.

Description : The primary succession refers to the development of communities on a (a) forest clearing after devastating fire (b) newly-exposed habitat with no record of earlier vegetation (c) freshly cleared crop field (d) pond, freshly filled with water after a dry phase.

Last Answer : (b) newly-exposed habitat with no record of earlier vegetation

Do I need permission from a Twitter user to embed any of their Tweets on my blog?

Description : Do I need permission from a Twitter user to embed any of their Tweets on my blog?

Last Answer : This article suggests that in most cases a Tweet is not copyrightable.

14) Carrying out experiments in a laboratory setting allows for control of independent variables that might influence the outcome of an experiment. A DISADVANTAGE of the laboratory setting is: A)difficulty in observing subjects and measuring their reactions B)failure to duplicate all the conditions that affect choices in the marketplace C)difficulty gaining the interest and attention of subjects D)its high cost in comparison with field experimentation

Description : 14) Carrying out experiments in a laboratory setting allows for control of independent variables that might influence the outcome of an experiment. A DISADVANTAGE of the laboratory setting is: ... the interest and attention of subjects D)its high cost in comparison with field experimentation

Last Answer : B)failure to duplicate all the conditions that affect choices in the marketplace

What is a composite primary key field ?

Description : What is a composite primary key field ?

Last Answer : Answer : A combination of two or more attributes or keys can collectively identify an NTT set, but they are called composite primary keys.

What is the primary key field ?

Description : What is the primary key field ?

Last Answer : The field in the data table by which the values ​​of a record can be completely distinguished from other records is called the primary key.

What is the name of entry which is used in Bank Column cash book to record the money transaction?

Description : What is the name of entry which is used in Bank Column cash book to record the money transaction?

Last Answer : Contra entry