Out of the following, which one is the most appropriate data field in context of employee table, if only one of these is required? -Technology

1 Answer

Answer :

(b) Date of birth is the most appropriate data field in the context of the employee table.

Related questions

Description : While creating a table named “Employee”, Mr. Rishi got confused as which data type he should chose for the column “EName” out of char and varchar. -Technology

Last Answer : Varchar would be the suitable data type for EName column as char data type is a fixed length data type while varchar is a variable length data type.Any employee‟s name will be of variable length so it‟s advisable to choose varchar over char data type.

Description : Name two possible primary keys for an Employee table. -Technology

Last Answer : Possible primary keys for an Employee table are emp code, emp phone number.

Description : Consider the following table: Employee EmpNo EmpName Designation -Technology

Last Answer : 1. EmpNo can be selected as a primary key.2. EmpName is having unique values, but there is no guarantee that if more employees are included then there would not be multiple people with similar names.So, in future, its values may be duplicate. Thus, it cannot be made as a primary key.

Description : Ms. Shalini has just created a table named “Employee” containing columns Ename, Department, Salary. -Technology

Last Answer : SQL command to add a primary key column:Alter table employee add empid int primary key;Importance of Primary key in a table:Primary key column is used to uniquely identify each record of the table. A column defined as primary key cannot have a duplicate entry and can't be left blank.

Description : Consider the table ‘Employee’. -Technology

Last Answer : SELECT DISTINCT (Location) FROM Employee ;

Description : Anjali writes the following commands with respect to a table employee having fields, empno, name, department, commission. -Technology

Last Answer : This is because the column commission contains a NULL value and the aggregate functions do not take into account NULL values. Thus Command1 returns the total number of records in the table whereas Command2 returns the total number of non NULL values in the column commission.

Description : What data type should you choose for a zipcode field in a table? (a) Text (b) Number -Technology

Last Answer : (b) Number data type should be chosen for a zip code field in a table.

Description : Which field property helps in setting data validation in a table? -Technology

Last Answer : (d) Validation Rule property specifies a condition that must be met before the data is accepted into the database.

Description : Write one example of data field for which you would set the Required property to Yes? -Technology

Last Answer : In a table, when we declare a field as a primary key, then the field’s Required property must be set to Yes because, in a primary key field, we need to enter data always.

Description : Write a python code to create a data frame with appropriate headings from the list given below : -Technology

Last Answer : import pandas as pd# initialize list of listsdata = [['S101', 'Amy', 70], ['S102', 'Bandhi', 69], ['S104','Cathy', 75], ['S105', 'Gundaho', 82]]# Create the pandas DataFramdf = pd.DataFrame(data, columns = ['ID', 'Name', 'Marks'])# printdataframe. print(df )

Description : Memo data type allows you to store only 255 characters in the table. -Technology

Last Answer : False Memo data type is used when character size is more than 255.

Description : Define query in the context of database. -Technology

Last Answer : A query is an inquiry into the database using the SELECT statement. These statements give you filtered data according to your conditions and specifications indicating the fields, records, and summaries which a user wants to fetch from a database.

Description : Which of the following statements is incorrect in the context of a worm? -Technology

Last Answer : (d) A worm is a self-replicating software and thus, it can travel on its own.

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.

Description : A field in a table is also called as ………………… . -Technology

Last Answer : A field in a table is also called ascolumn.

Description : Which of the following is not a part of a table structure in MS_Access? (a) Field Name (b) Field Type -Technology

Last Answer : (d) From the given options Field Name, Field Type Primary Key are the part of a table.

Description : When you define a field for a table, which of the following parameters do Access always consider optional? -Technology

Last Answer : (d) Description field of the table is optional, as it depends on the databasedesigner that he/she wants to describe a field or not.

Description : To store object like image, you need to create a field in a table, having field type as …………. . -Technology

Last Answer : To store object like image, you need to create a field in a table, having field type as OLE Object.

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.

Description : A table named School (containing data of students of the whole school) is created -Technology

Last Answer : AdmissionNo should be set as the primary key because admission numbers are unique for each and every student of the school, which is not possible in the case with RollNo and Name.

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Last Answer : (a) Relational Database Management System stores data in the form of relation. As we know, relations are known as table.

Description : ………….. is the smallest part of a table in which one data item can be kept. -Technology

Last Answer : Fieldis the smallest part of a table in which one data item can be kept.

Description : For what, Memo data type is used? (a) To add table (b) To store objects created in other programs -Technology

Last Answer : (c) As we know, Memo provides character upto 65536 so, it is used for long text entries.

Description : Memo data type allows you to store character type values in a table. -Technology

Last Answer : True Memo data type allows upto 65536 characters.

Description : The Datasheet View displays the data in a table in tabular format. -Technology

Last Answer : True A datasheet is a simple view of data arranged in rows and columns.

Description : Design View allows users to enter data in the table. -Technology

Last Answer : False Because Design View is used to edit the table design only.

Description : The tag is used to specify the individual table data in a table. (a) (b) -Technology

Last Answer : (b)The tag is used to specify the individual table data in a table.

Description : Which one of the following is not an option for aligning data in a table? (a) justify (b) right -Technology

Last Answer : (a) justify option is not used for aligning data in a table.

Description : In the tag, td stands for (a) Table Data (b) Table Time and Date -Technology

Last Answer : (a) td stands for Table Data.

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Description : …………… tag is used to insert data into a table. -Technology

Last Answer : tag is used to insert data into a table.

Description : Help Ramesh in identifying any two columns for a table named student along with their suitable data type. -Technology

Last Answer : Column NameData TypeRollNoIntegerNameVarchar(20)

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Last Answer : f = open('numbers.csv', 'r') with f:reader = csv.reader(f)for row in reader:for e in row:print(e)

Description : Consider a table SALESMAN with the following data: SNO SNAME SALARY BONUS DATE OF JOIN A01 Beena Mehta 30000 45.23 29_10_2019 A02 K. L. -Technology

Last Answer : alternative answer

Description : If a piece of data (field value) is stored in two places in the database, then storage space -Technology

Last Answer : False If a piece of data is stored in two places in the database, then storage space is wasted and changing the data in one spot will cause data inconsistency.

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Description : Which field property sets limits on the data that is entered? -Technology

Last Answer : Fixed Field Length or Field Size property sets the limits on the data entered.

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

Last Answer : Required property.

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Description : When Memo data type is preferred over Text type for a field? -Technology

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Description : Write one example of each field, for which you would use 1. Text data type -Technology

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Description : For storing lengthy information in a field ………….. data type is used. -Technology

Last Answer : For storing lengthy information in a field Memodata type is used.

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Last Answer : In a Text type data field, we can enter a maximum of 255characters.

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Description : Which of the following statements is NOT correct ? (A) Computer is capable of processing only digital signal (B) Computer is capable of analysing both quantitative and qualitative data (C) Appropriate ... for processing the data (D) Computer is capable of processing digital as well as analog signals

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