Test your basic knowledge |

Django Queryset

Subject : it-skills

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Lookup type that yields an "exact" match. If you don't provide a lookup type -- that is - if your keyword argument doesn't contain a double underscore -- the lookup type is assumed to be of this sort.
Multi-table inheritance
exact
Field lookups
iexact

2. Each one of these is a Python class that subclasses django.db.models.Model. Each attribute of one of these represents a database field.
DoesNotExist
clear() method
order_by(*fields)
model

3. This query finds all entries with an id in the list [1 - 3 - 4]
class type
Entry.objects.filter(pub_date__range=(start_date - end_date))
Entry.objects.filter(id__in=[1 - 3 - 4])
Q()

4. Adds to each object in the QuerySet with the provided list of aggregate values (averages - sums - etc) that have been computed over the objects that are related to the objects in the QuerySet. Each argument to this is content that will be added to ea
annotate(args - *kwargs)
Manager methods
choices tuple
__unicode__()

5. If this option is True - Django will store empty values as NULL in the database. Default is False.
get_or_create(**kwargs)
null
pickling
when you add new apps to INSTALLED_APPS

6. Accomplish this by using the field name of related fields across models - separated by double underscores - until you get to the field you want. For example - to get all Entry objects with a Blog whose name is 'Beatles Blog': Entry.objects.filter(blo
range
values_list(*fields)
relationship spanning
Entry.objects.filter(pub_date__year=2007).update(headline='Everything is the same')

7. A convenience method for constructing an object and saving it all in one step.
create(**kwargs)
gt
clear() method
year

8. In some complex data-modeling situations - your models might contain a lot of fields - some of which could contain a lot of data (for example - text fields) - or require expensive processing to convert them to Python objects. If you are using the res
defer(*fields)
week_day
add()
none()

9. These add custom "row-level" functionality to your objects. These act on a particular model instance.
Custom model methods
gt
ManyToManyField
order_by(*fields)

10. If you are using this attribute on a ForeignKey or ManyToManyField - you must always specify a unique reverse name for the field.
related_name
get(**kwargs)
MultipleObjectsReturned
update()

11. Evaluates the QuerySet (by performing the query) and returns an iterator over the results. A QuerySet typically caches its results internally so that repeated evaluations do not result in additional queries; this method will instead read results dire
iterator()
class attributes
annotate(args - *kwargs)
reverse name

12. The database that will be used if this query is executed now
many-to-one relationship
class attributes
db
|

13. Lookup type for date/datetime fields that finds an exact year match. Takes a four-digit year.
Meta class
year
get_absolute_url()
class type

14. Operator for comparing two model instances for equality. Behind the scenes - it compares the primary key values of two models.
help_text
regex
==
many-to-one relationship

15. Defines a many-to-one relationship. ou use it just like any other Field type: by including it as a class attribute of your model.
gte
values_list(*fields)
ForeignKey
pickling

16. Returns the object matching the given lookup parameters
ForeignKey
get(**kwargs)
F()
update()

17. Lookup type that finds a case-sensitive regular expression match.
Entry.objects.filter(id__gt=4)
regex
iregex
isnull

18. Lookup type that returns results with a case-insensitive start sequence.
annotate(args - *kwargs)
in
all()
istartswith

19. This represents a collection of objects from your database. It can have zero - one or many filters.
ForeignKey
QuerySet
Entry.objects.filter(pub_date__year=2005).delete()
|

20. If this option is True - the field is allowed to be blank. Default is False.
iteration
blank
filter(**kwargs)
ManyToManyField

21. Takes a list of primary-key values and returns a dictionary mapping each primary-key value to an instance of the object with the given ID.
in_bulk(id_list)
pickling
Field lookups
many-to-one relationship

22. These are "anything that's not a field" - such as ordering options (ordering) - database table name (db_table) - or human-readable singular and plural names (verbose_name and verbose_name_plural)
delete()
Model metadata
class type
delete()

23. Defined by django.db.models.ForeignKey. You use it just like any other Field type: by including it as a class attribute of your model.
get(**kwargs)
in
many-to-one relationship
Meta class

24. A QuerySet is iterable - and it executes its database query the first time you iterate over it.
through argument
iteration
Manager methods
Multi-table inheritance

25. Here - you can't use add - create - or assignment (i.e. - beatles.members = [...]) to create relationships. You need to specify all the detail for the relationship required by the intermediate model.
lt
null
week_day
Many-to-many relationship through an intermediate model

26. a QuerySet can be sliced - using Python's array-slicing syntax.
lte
slicing
Entry.objects.filter(id__gt=4)
dates(field - kind - order='ASC')

27. This is a criterion that narrow down a QuerySet based on given parameters.
month
==
Restrictions on field names
filter

28. These are specified as keyword arguments to the QuerySet methods filter() - exclude() and get(). These take the form field__lookuptype=value .
extra(select=None - where=None - params=None - tables=None - order_by=None - select_params=None)
iteration
Field lookups
pk

29. This object encapsulates a collection of keyword arguments - with the keys being field lookup types. These objects can be combined using the & and | operators - as well as negated with the ~ operator.
delete()
get_or_create(**kwargs)
Q()
year

30. Lookup type that returns results in a given list.
default
in
get(**kwargs)
Many-to-many relationship to self

31. Returns a new QuerySet containing objects that match the given lookup parameters.
filter(**kwargs)
Entry.objects.filter(pub_date__year=2005).delete()
Q(question__startswith='Who') | ~Q(pub_date__year=2005)
model

32. Can be used to remove all many-to-many relationships for an instance
|
clear() method
edit your settings file and change the INSTALLED_APPS setting to add the name of the module that contains your models.py.
MultipleObjectsReturned

33. This tells Django how to calculate the URL for an object. Django uses this in its admin interface - and any time it needs to figure out a URL for an object.
QuerySet
get_absolute_url()
==
Many-to-many relationship to self

34. A Python "magic method" that returns a unicode "representation" of any object.
__unicode__()
unique
startswith
many-to-one relationship

35. In this case - an intermediate model can have multiple foreign keys to the source model. Here - two foreign keys to the same model are permitted - but they will be treated as the two (different) sides of the many-to-many relation.
Many-to-many relationship to self
model
Manager
Entry.objects.filter(pub_date__year=2007).update(headline='Everything is the same')

36. This field is added automatically - but this behavior can be overridden
week_day
id field
choices
related_name

37. Lookup type that finds a case-insensitive regular expression match.
iregex
Meta class
filter chaining
Multi-table inheritance

38. Extra text to be displayed under the field on the object's admin form to provide assistance to users. It's useful for documentation even if your object doesn't have an admin form.
id field
related_name
none()
help_text

39. A Q object that asks for entries with a question value that start with 'Who' or do not have a publication date of 2005.

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

40. Lookup type that returns results greater than a given value.
Restrictions on field names
through argument
Entry.objects.filter(id__gt=4)
gt

41. If True - this field is the primary key for the model.
primary_key
relationship spanning
in
ManyToManyField

42. This query deletes all Entry objects with a pub_date year of 2005.
get(**kwargs)
Entry.objects.filter(pub_date__year=2005).delete()
range
iterator()

43. This object allows you to compare the value of a model field with another field on the same model. Django supports the use of addition - subtraction - multiplication - division and modulo arithmetic with these objects - both with constants and with o
many-to-one relationship
F()
blank
related_name

44. Fields are specified by these
class attributes
Entry.objects.filter(pub_date__year=2007).update(headline='Everything is the same')
model
primary_key

45. Lookup type that returns results with a case-sensitive end sequence.
endswith
QuerySet
in
|

46. Returns a new QuerySet that uses SELECT DISTINCT in its SQL query. This eliminates duplicate rows from the query results.
many-to-many relationship
distinct()
defer(*fields)
save()

47. This sets a field to a particular value for all the objects in a QuerySet. You can only set non-relation fields and ForeignKey fields using this method.
range
none()
exclude(**kwargs)
update()

48. To activate your models
__unicode__()
edit your settings file and change the INSTALLED_APPS setting to add the name of the module that contains your models.py.
none()
Proxy model

49. Lookup type that yields a case-insensitive match.
==
iexact
year
ordered

50. Exception raised by get(**kwargs) if no items match the query.
Manager methods
DoesNotExist
unique
Entry.objects.filter(pub_date__year=2005).delete()

Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?

Major Subjects
Tests & Exams AP CLEP DSST GRE SAT GMAT	Certifications CISSP go to https://www.isc2.org/ PMP ITIL RHCE MCTS More...	IT Skills Android Programming Data Modeling Objective C Programming Basic Python Programming Adobe Illustrator More...	Business Skills Advertising Techniques Business Accounting Basics Business Strategy Human Resource Management Marketing Basics More...
Soft Skills Body Language People Skills Public Speaking Persuasion Job Hunting And Resumes More...	Vocabulary GRE Vocab SAT Vocab TOEFL Essential Vocab Basic English Words For All Global Words You Should Know Business English More...	Languages AP German Vocab AP Latin Vocab SAT Subject Test: French Italian Survival Norwegian Survival More...	Engineering Audio Engineering Computer Science Engineering Aerospace Engineering Chemical Engineering Structural Engineering More...
Health Sciences Basic Nursing Skills Health Science Language Fundamentals Veterinary Technology Medical Language Cardiology Clinical Surgery More...	English Grammar Fundamentals Literary And Rhetorical Vocab Elements Of Style Vocab Introduction To English Major Complete Advanced Sentences Literature Homonyms More...	Math Algebra Formulas Basic Arithmetic: Measurements Metric Conversions Geometric Properties Important Math Facts Number Sense Vocab Business Math More...	Other Major Subjects Science Economics History Law Performing-arts Cooking Logic & Reasoning Trivia

Test your basic knowledge |

Django Queryset

Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?

Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests

Major Subjects

Tests & Exams

Certifications

IT Skills

Business Skills

Soft Skills

Vocabulary

Languages

Engineering

Health Sciences

English

Math

Other Major Subjects

Browse all subjects

Browse all tests

Most popular tests