Class information for:
Level 1: TEMPORAL DATABASES//SCHEMA EVOLUTION//VALID TIME

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
16230 666 29.0 25%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
9 4 COMPUTER SCIENCE, THEORY & METHODS//COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE//COMPUTER SCIENCE, INFORMATION SYSTEMS 1247339
20 3       COMPUTER SCIENCE, INFORMATION SYSTEMS//COMPUTER SCIENCE, THEORY & METHODS//COMPUTER SCIENCE, SOFTWARE ENGINEERING 118625
864 2             INFORMATION SYSTEMS//COMPUTER SCIENCE, INFORMATION SYSTEMS//ACM TRANSACTIONS ON DATABASE SYSTEMS 11601
16230 1                   TEMPORAL DATABASES//SCHEMA EVOLUTION//VALID TIME 666

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 TEMPORAL DATABASES authKW 3051716 16% 62% 107
2 SCHEMA EVOLUTION authKW 632065 4% 48% 29
3 VALID TIME authKW 561629 2% 88% 14
4 TRANSACTION TIME authKW 509602 3% 65% 17
5 TEMPORAL DATA MODEL authKW 462295 2% 92% 11
6 TEMPORAL QUERY LANGUAGES authKW 426732 2% 85% 11
7 SCHEMA VERSIONING authKW 309467 1% 75% 9
8 TEMPORAL RELATIONAL DATABASES authKW 229238 1% 100% 5
9 TSQL2 authKW 191030 1% 83% 5
10 TRANSACTION TIME DATABASES authKW 183390 1% 100% 4

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 Computer Science, Information Systems 40413 64% 0% 423
2 Computer Science, Theory & Methods 9342 33% 0% 218
3 Computer Science, Artificial Intelligence 8021 29% 0% 192
4 Computer Science, Software Engineering 7355 24% 0% 163
5 Computer Science, Hardware & Architecture 933 7% 0% 46
6 Medical Informatics 288 3% 0% 18
7 Engineering, Electrical & Electronic 197 12% 0% 83
8 Information Science & Library Science 126 2% 0% 16
9 Computer Science, Interdisciplinary Applications 80 4% 0% 24
10 Logic 42 1% 0% 4

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 ARCH LIBRARY SCI 45848 0% 100% 1
2 CNRS LISAN BAOU PROJECT 45848 0% 100% 1
3 DATABASE MULTIMEDIA SYST 45848 0% 100% 1
4 DEP INTERNAL MED PUBL HLTH 45848 0% 100% 1
5 DIP ELETTR INFORMAT SISTEMIST 45848 0% 100% 1
6 DIPARTIMENTO MATEMAT COMP 45848 0% 100% 1
7 FA2A 45848 0% 100% 1
8 GLOBAL EBUSINESS SOLUT 45848 0% 100% 1
9 GRP HETEROGENEOUS INFORMAT SYST 45848 0% 100% 1
10 IST STUDI RIC DOCUMENTAZ 45848 0% 100% 1

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING 54881 9% 2% 60
2 ACM TRANSACTIONS ON DATABASE SYSTEMS 52573 5% 4% 30
3 DATA & KNOWLEDGE ENGINEERING 48317 5% 3% 36
4 INFORMATION SYSTEMS 38268 5% 2% 35
5 VLDB JOURNAL 22539 3% 3% 17
6 SIGMOD RECORD 20890 2% 3% 16
7 LECTURE NOTES IN COMPUTER SCIENCE 13695 24% 0% 163
8 JOURNAL OF INTELLIGENT INFORMATION SYSTEMS 9255 2% 2% 11
9 ANNALS OF MATHEMATICS AND ARTIFICIAL INTELLIGENCE 6282 2% 1% 11
10 INFORMATION AND SOFTWARE TECHNOLOGY 5377 3% 1% 17

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 TEMPORAL DATABASES 3051716 16% 62% 107 Search TEMPORAL+DATABASES Search TEMPORAL+DATABASES
2 SCHEMA EVOLUTION 632065 4% 48% 29 Search SCHEMA+EVOLUTION Search SCHEMA+EVOLUTION
3 VALID TIME 561629 2% 88% 14 Search VALID+TIME Search VALID+TIME
4 TRANSACTION TIME 509602 3% 65% 17 Search TRANSACTION+TIME Search TRANSACTION+TIME
5 TEMPORAL DATA MODEL 462295 2% 92% 11 Search TEMPORAL+DATA+MODEL Search TEMPORAL+DATA+MODEL
6 TEMPORAL QUERY LANGUAGES 426732 2% 85% 11 Search TEMPORAL+QUERY+LANGUAGES Search TEMPORAL+QUERY+LANGUAGES
7 SCHEMA VERSIONING 309467 1% 75% 9 Search SCHEMA+VERSIONING Search SCHEMA+VERSIONING
8 TEMPORAL RELATIONAL DATABASES 229238 1% 100% 5 Search TEMPORAL+RELATIONAL+DATABASES Search TEMPORAL+RELATIONAL+DATABASES
9 TSQL2 191030 1% 83% 5 Search TSQL2 Search TSQL2
10 TRANSACTION TIME DATABASES 183390 1% 100% 4 Search TRANSACTION+TIME+DATABASES Search TRANSACTION+TIME+DATABASES

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref.
in cl.		 Shr. of ref. in
cl.		 Citations
1 WREMBEL, R , (2009) A SURVEY OF MANAGING THE EVOLUTION OF DATA WAREHOUSES.INTERNATIONAL JOURNAL OF DATA WAREHOUSING AND MINING. VOL. 5. ISSUE 2. P. 24 -56 24 80% 11
2 COMBI, C , OLIBONI, B , QUINTARELLI, E , (2012) MODELING TEMPORAL DIMENSIONS OF SEMISTRUCTURED DATA.JOURNAL OF INTELLIGENT INFORMATION SYSTEMS. VOL. 38. ISSUE 3. P. 601 -644 18 75% 0
3 FAISAL, S , SARWAR, M , (2014) TEMPORAL AND MULTI-VERSIONED XML DOCUMENTS: A SURVEY.INFORMATION PROCESSING & MANAGEMENT. VOL. 50. ISSUE 1. P. 113-131 15 83% 3
4 TERENZIANI, P , (2012) TEMPORAL AGGREGATION ON USER-DEFINED GRANULARITIES.JOURNAL OF INTELLIGENT INFORMATION SYSTEMS. VOL. 38. ISSUE 3. P. 785 -813 15 88% 0
5 CURRIM, FA , CURRIM, SA , DYRESON, CE , SNODGRASS, RT , THOMAS, SW , ZHANG, R , (2012) ADDING TEMPORAL CONSTRAINTS TO XML SCHEMA.IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING. VOL. 24. ISSUE 8. P. 1361 -1377 15 83% 6
6 TERENZIANI, P , STANTIC, B , BOTTRIGHI, A , SATTAR, A , (2013) AN INTENSIONAL APPROACH FOR PERIODIC DATA IN RELATIONAL DATABASES.JOURNAL OF INTELLIGENT INFORMATION SYSTEMS. VOL. 41. ISSUE 2. P. 151 -186 14 88% 0
7 EGIDI, L , TERENZIANI, P , (2008) A MODULAR APPROACH TO USER-DEFINED SYMBOLIC PERIODICITIES.DATA & KNOWLEDGE ENGINEERING. VOL. 66. ISSUE 1. P. 163 -198 17 81% 0
8 OZSOYOGLU, G , SNODGRASS, RT , (1995) TEMPORAL AND REAL-TIME DATABASES - A SURVEY.IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING. VOL. 7. ISSUE 4. P. 513 -532 27 55% 131
9 ANSELMA, L , STANTIC, B , TERENZIANI, P , SATTAR, A , (2013) QUERYING NOW-RELATIVE DATA.JOURNAL OF INTELLIGENT INFORMATION SYSTEMS. VOL. 41. ISSUE 2. P. 285 -311 10 100% 1
10 ANSELMA, L , PIOVESAN, L , TERENZIANI, P , (2016) A 1NF TEMPORAL RELATIONAL MODEL AND ALGEBRA COPING WITH VALID-TIME TEMPORAL INDETERMINACY.JOURNAL OF INTELLIGENT INFORMATION SYSTEMS. VOL. 47. ISSUE 3. P. 345 -374 13 72% 0

Classes with closest relation at Level 1


Rank Class id link
1 23551 VERSION CONTROL//SOFTWARE CONFIGURATION MANAGEMENT//XML DIFF
2 13344 DATA WAREHOUSE//OLAP//DATA WAREHOUSING
3 13630 OBJECT ORIENTED DATABASES//OBJECT ORIENTED DATABASE SYSTEMS//OBJECT ALGEBRA
4 5337 QUALITATIVE SPATIAL REASONING//TOPOLOGICAL RELATIONS//REGION CONNECTION CALCULUS
5 16268 ARDEN SYNTAX//COMPUTER INTERPRETABLE GUIDELINES//CLINICAL PATHWAY ANALYSIS
6 6911 FUNCTIONAL DEPENDENCY//SCHEMA MAPPING//ACM TRANSACTIONS ON DATABASE SYSTEMS
7 10587 CONCEPTUAL MODELING//ENTITY RELATIONSHIP MODEL//DATABASE DESIGN
8 14858 FUZZY DATABASES//FUZZY FUNCTIONAL DEPENDENCY//FUZZY RELATIONAL DATABASES
9 12401 SCHEMA INTEGRATION//SCHEMA MATCHING//HETEROGENEOUS DATABASES
10 33401 2 PIECE METAL CAN//DEEP DRAWN CAP//DIGITAL TELEVISION CLOSED CAPTION

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