What is an Entity set?

What is an Entity set?
by

1 Answer

Answer :

It is a collection of all entities of particular entity type in the database.
by

Related questions

What is Weak Entity set?

Description : What is Weak Entity set?

Last Answer : An entity set may not have sufficient attributes to form a primary key, and its primary key compromises of its partial key and primary key of its parent entity, then it is said to be Weak Entity set.

ON WHICH ENTITY IS THE CROSS-VALIDATION RULE APPLICABLE?

Description : ON WHICH ENTITY IS THE CROSS-VALIDATION RULE APPLICABLE?

Last Answer : - It’s a feature of Key flexfield, applicable on Value Sets. 

ON WHICH ENTITY IS A SECURITY RULE APPLICABLE?

Description : ON WHICH ENTITY IS A SECURITY RULE APPLICABLE?

Last Answer : - It’s a feature of Key flexfield, applicable on Value Sets. 

A dominant entity is the entity a) on the N side in a 1 : N relationship b) on the 1 side in a 1 : N relationship c) on either side in a 1 : 1 relationship d) nothing to do with 1 : 1 or 1 : N relationship

Description : A dominant entity is the entity a) on the N side in a 1 : N relationship b) on the 1 side in a 1 : N relationship c) on either side in a 1 : 1 relationship d) nothing to do with 1 : 1 or 1 : N relationship

Last Answer : d) nothing to do with 1 : 1 or 1 : N relationship

In mapping of ERD to DFD a) entities in ERD should correspond to an existing entity/store in DFD b) entity in DFD is converted to attributes of an entity in ERD c) relations in ERD has 1 to 1 correspondence to processes in DFD d) relationships in ERD has 1 to 1 correspondence to flows in DFD

Description : In mapping of ERD to DFD a) entities in ERD should correspond to an existing entity/store in DFD b) entity in DFD is converted to attributes of an entity in ERD c) relations in ERD has 1 to 1 correspondence to processes in DFD d) relationships in ERD has 1 to 1 correspondence to flows in DFD

Last Answer : a) entities in ERD should correspond to an existing entity/store in DFD

What is an Extension of entity type?

Description : What is an Extension of entity type?

Last Answer : The collections of entities of a particular entity type are grouped together into an entity set.

What is an Entity type?

Description : What is an Entity type?

Last Answer : It is a collection (set) of entities that have same attributes.

What is an Entity?

Description : What is an Entity?

Last Answer : It is a ‘thing’ in the real world with an independent existence.

What is an Entity?

Description : What is an Entity?

Last Answer : An entity is a business object represents a group or category of data.

s it possible to set a filter condition in a cross product group in matrix reports?

Description : s it possible to set a filter condition in a cross product group in matrix reports?

Last Answer : No

If the maximum record retrieved property of the query is set to 10 then a summary value will be calculated?

Description : If the maximum record retrieved property of the query is set to 10 then a summary value will be calculated?

Last Answer : Only for 10 records.

Can u set default font in forms?

Description : Can u set default font in forms?

Last Answer : Yes. Change windows registry(regedit). Set form45_font to the desired font.

which system variables can be set by users?

Description : which system variables can be set by users?

Last Answer : SYSTEM.MESSAGE_LEVEL SYSTEM.DATE_THRESHOLD SYSTEM.EFFECTIVE_DATE SYSTEM.SUPPRESS_WORKING

What is the built-in used to get and set lov properties during run-time?

Description : What is the built-in used to get and set lov properties during run-time?

Last Answer : Get_lov_property Set_lov_property Record Group

What database events can be set? (for DBA

Description : What database events can be set? (for DBA

Last Answer : The following events are frequently used by DBAs and Oracle Support to diagnose problems: " 10046 trace name context forever, level 4 Trace SQL statements and show bind variables in trace output. " 10046 ... . On Unix, you can type "oerr ora 10053" from the command prompt to get event details.

What is a database EVENT and how does one set it? (for DBA

Description : What is a database EVENT and how does one set it? (for DBA

Last Answer : Oracle trace events are useful for debugging the Oracle database server. The following two examples are simply to demonstrate syntax. Refer to later notes on this page for an explanation of what these ... changes to the INIT.ORA file will affect all sessions once the database has been restarted.

How is it possible to select generate a select set for the query in the query property sheet?

Description : How is it possible to select generate a select set for the query in the query property sheet?

Last Answer : By using the tables/columns button and then specifying the table and the column names.

Atleast how many set of data must a data model have before a data model can be base on it?

Description : Atleast how many set of data must a data model have before a data model can be base on it?

Last Answer : Four

Name of the functions used to get/set canvas properties?

Description : Name of the functions used to get/set canvas properties?

Last Answer : Get_view_property, Set_view_property

What are the different default triggers created when Master Deletes Property is set to Cascade?

Description : What are the different default triggers created when Master Deletes Property is set to Cascade?

Last Answer : Master Deletes Property Resulting Triggers --------------------------------------------------- Cascading On-Clear-Details On-Populate-Details Pre-delete

What are the different default triggers created when Master Deletes Property is set to isolated?

Description : What are the different default triggers created when Master Deletes Property is set to isolated?

Last Answer : Master Deletes Property Resulting Triggers --------------------------------------------------- Isolated On-Clear-Details On-Populate-Details

What are the different default triggers created when Master Deletes Property is set to Non-isolated?

Description : What are the different default triggers created when Master Deletes Property is set to Non-isolated?

Last Answer : Master Deletes Property Resulting Triggers ---------------------------------------------------- Non-Isolated(the default) On-Check-Delete-Master On-Clear-Details On-Populate-Details

If a break order is set on a column would it affect columns which are under the column?

Description : If a break order is set on a column would it affect columns which are under the column?

Last Answer : No

Which parameter can be used to set read level consistency across multiple queries?

Description : Which parameter can be used to set read level consistency across multiple queries?

Last Answer : Read only

VALUE SET LIST TYPES

Description : VALUE SET LIST TYPES

Last Answer :  List of values (10 to 200)  Long list of values (> 200)  Poplist (> 10)

A B C is a set of attributes. The functional dependency is as follows AB -> B AC -> C C -> B a) is in 1NF b) is in 2NF c) is in 3NF d) is in BCNF

Description : A B C is a set of attributes. The functional dependency is as follows AB -> B AC -> C C -> B a) is in 1NF b) is in 2NF c) is in 3NF d) is in BCNF

Last Answer : a) is in 1NF

Name the three major set of files on disk that compose a database in Oracle

Description : Name the three major set of files on disk that compose a database in Oracle

Last Answer : There are three major sets of files on disk that compose a database. All the files are binary. These are ∙ Database files ∙ Control files ∙ Redo logs The most important of these ... actual data resides. The control files and the redo logs support the functioning of the architecture itself.

What is Set-at-a-time or Set-oriented?

Description : What is Set-at-a-time or Set-oriented?

Last Answer : The High level or Non-procedural DML can specify and retrieve many records in a single DML statement. This retrieve of a record is said to be Set-at-a-time or Set-oriented.

What is Relationship set?

Description : What is Relationship set?

Last Answer : The collection (or set) of similar relationships.

What is Data Entity Set ?

Description : What is Data Entity Set ?

Last Answer : The sum of one or more data NTT sets is called NTT set.

What kind of mechanism is to be taken into account for converting a weak entity set into strong entity set in entity-relationship diagram ? (A) Generalization (B) Aggregation (C) Specialization (D) Adding suitable attributes

Description : What kind of mechanism is to be taken into account for converting a weak entity set into strong entity set in entity-relationship diagram ? (A) Generalization (B) Aggregation (C) Specialization (D) Adding suitable attributes

Last Answer : (D) Adding suitable attributes

Which of the following statements is FALSE about weak entity set ? (A) Weak entities can be deleted automatically when their strong entity is deleted. (B) Weak entity set avoids the data duplication and consequent possible inconsistencies caused by duplicating the key of the strong entity. (C) A weak entity set has no primary keys unless attributes of the strong entity set on which it depends are included. (D) Tuples in a weak entity set are not partitioned according to their relationship with tuples in a strong entity set.

Description : Which of the following statements is FALSE about weak entity set ? (A) Weak entities can be deleted automatically when their strong entity is deleted. (B) Weak entity set avoids the data ... weak entity set are not partitioned according to their relationship with tuples in a strong entity set.

Last Answer : (D) Tuples in a weak entity set are not partitioned according to their relationship with tuples in a strong entity set.

For a weak entity set to be meaningful, it must be associated with another entity set in combination with some of their attribute values, is called as : (A) Neighbour Set (B) Strong Entity Set (C) Owner entity set (D) Weak Set

Description : For a weak entity set to be meaningful, it must be associated with another entity set in combination with some of their attribute values, is called as : (A) Neighbour Set (B) Strong Entity Set (C) Owner entity set (D) Weak Set

Last Answer : (C) Owner entity set 

Which of the following provides the best description of an entity type? (A) A specific concrete object with a defined set of processes (e.g. Jatin with diabetes) (B) A value given to a particular attribute (e.g. height-230 cm) (C) A thing that we wish to collect data about zero or more, possibly real world examples of it may exist. (D) A template for a group of things with the same set of characteristics that may exist in the real world

Description : Which of the following provides the best description of an entity type? (A) A specific concrete object with a defined set of processes (e.g. Jatin with diabetes) (B) A value given to a ... template for a group of things with the same set of characteristics that may exist in the real world

Last Answer : Answer: D

Consider the following Entity-Relationship (E-R) diagram and three possible relationship sets (I, II and III) for this E-R diagram: Image If different symbols stand for different values (e.g., t1 is definitely not equal to t2), then which of the above could not be the relationship set for the E-R diagram ? (A) I only (B) I and II only (C) II only (D) I, II and III

Description : Consider the following Entity-Relationship (E-R) diagram and three possible relationship sets (I, II and III) for this E-R diagram: If different symbols stand for different values (e.g., t1 is definitely not equal to t2 ... diagram ? (A) I only (B) I and II only (C) II only (D) I, II and III

Last Answer : (A) I only

What does "jumps off the screen" mean?

Description : What does "jumps off the screen" mean?

Last Answer : answer:AMD is a relatively small manufacturer but well established in the industry. In this context, AMD jumps off the screen at the guy doing the research into acquiring companies for ... chip manufacturing division, but AMD is the one that really stands out from an acquisition perspective.

How to add conditions in select statement in oracle?

Description : How to add conditions in select statement in oracle?

Last Answer : Just add the decode

How can I dump an oracle schema to a LOCAL file over a network connection from sqlplus?

Description : How can I dump an oracle schema to a LOCAL file over a network connection from sqlplus?

Last Answer : By connecting and spooling are you excluding the exp/imp commands (or expdb/impdb in 10g)?

What are the two ways to incorporate images into a oracle forms application?

Description : What are the two ways to incorporate images into a oracle forms application?

Last Answer : Boilerplate Images Image_items

Can one export a subset of a table? (for DBA

Description : Can one export a subset of a table? (for DBA

Last Answer : From Oracle8i one can use the QUERY= export parameter to selectively unload a subset of the data from a table. Look at this example: exp scott/tiger tables=emp query=\"where deptno=10\"

What are the types of visual attribute settings?

Description : What are the types of visual attribute settings?

Last Answer : Custom Visual attributes Default visual attributes Named Visual attributes. Window

How does one use the import/export utilities? (for DBA

Description : How does one use the import/export utilities? (for DBA

Last Answer : Look for the "imp" and "exp" executables in your $ORACLE_HOME/bin directory. One can run them interactively, using command line parameters, or using parameter files. Look at the imp/exp parameters ... and export data with the "Schema Manager" GUI that ships with Oracle Enterprise Manager (OEM).

what is a display item?

Description : what is a display item?

Last Answer : Display items are similar to text items but store only fetched or assigned values. Operators cannot navigate to a display item or edit the value it contains.

What is import/export and why does one need it? (for DBA

Description : What is import/export and why does one need it? (for DBA

Last Answer : The Oracle export (EXP) and import (IMP) utilities are used to perform logical database backup and recovery. They are also used to move Oracle data from one machine, database or schema to ... corruption. Ensure that all the data can be read. . Transporting tablespaces between databases . Etc.

Are there any troubleshooting tips for OEM? (for DBA

Description : Are there any troubleshooting tips for OEM? (for DBA

Last Answer : . Create the OEM repository with a user (which will manage the OEM) and store it in a tablespace that does not share any data with other database users. It is a bad practice to create ... successfully. Check the log to see the results of the execution rather than relying on this status.

Where can one get more information about TCL? (for DBA

Description : Where can one get more information about TCL? (for DBA

Last Answer : One can write custom event checking routines for OEM using the TCL (Tool Command Language) language. Check the following sites for more information about TCL: . The Tcl Developer Xchange - ... the OraTCL package . Tom Poindexter's Tcl Page - Oratcl was originally written by Tom Poindexter

How does one start the Oracle Intelligent Agent? (for DBA

Description : How does one start the Oracle Intelligent Agent? (for DBA

Last Answer : One needs to start an OIA (Oracle Intelligent Agent) process on all machines that will to be managed via OEM. For OEM 9i and above:

What is the Oracle Intelligent Agent? (for DBA

Description : What is the Oracle Intelligent Agent? (for DBA

Last Answer : The Oracle Intelligent Agent (OIA) is an autonomous process that needs to run on a remote node in the network to make the node OEM manageable. The Oracle Intelligent Agent is ... events registered in Enterprise Manager; and . Executing tasks associated with jobs submitted to Enterprise Manager.

What are the types of SQL Statement ?

Description : What are the types of SQL Statement ?

Last Answer : Data Definition Language : CREATE,ALTER,DROP,TRUNCATE,REVOKE,NO AUDIT & COMMIT.

How does one backout events and jobs during maintenance slots? (for DBA

Description : How does one backout events and jobs during maintenance slots? (for DBA

Last Answer : Managemnet and data collection activity can be suspended by imposing a blackout. Look at these examples: agentctl start blackout # Blackout the entrire agent agentctl stop blackout # Resume normal monitoring ... management agentctl start blackout -s jobs -d 00:20 # Blackout jobs for 20 minutes