T. Catarci, M. Costabile, S. Levialdi, C. Batini, "Visual Query Systems for Databases: A Survey", Journal of Visual Languages and Computing, 1995  Home/Search   Document Details and Download   Summary   Related Articles   Check

....of them are object oriented. Examples of visual interfaces of those kinds are KIVIEW [Mottr 88] Pasta 3 [Kunt 89] OdeView [Agra 90] PESTO [Carey 96] In [Catarci 96] a multiparadigmatic 3 approach with several visual representations is used to access databases according to the user needs. In [Catarci 95] 4 concept types are identified to represent information through the data model: Objects of the real world and their properties, classes of objects, relationships among objects and relationships among classes of objects. Semantic Data Models (SMD) Hammer 81] aim at efficiently representing ....

Catarci T., M. F. Costabile, S. Levialdi, C. Batini," Visual Query Systems for Databases: A Survey" , TR SI-95/17, September 1995.

....context of database management: schema definition, query formulation, and data visualization. Accordingly, three kinds of visual interfaces have been designed and are currently provided by most commercial DBMS: schema browsers and editors, visual query languages, and data visualization tools (see [CCLB97] for a survey) In this paper, we focus on a family of data visualization interfaces for object databases, known as object browsers [PBL 92,DAA 95,DGJS95,CHMW96] The underlying principle of such interfaces is to provide a visual representation of the data residing within objects, and ....

T. Catarci, M. Costabile, S. Levialdi, and C. Batini. Visual query systems for databases: a survey. Journal of visual languages and computing, 8(2), 1997.

....and analysis of query outputs. Correspondingly, three Published in proceedings of BDA 00, October 2000, Blois (France) kinds of visual interfaces have been designed and are provided by most commercial DBMS: schema browsers and editors, visual query languages, and data visualization tools (see [CCLB97] for a survey) Among data visualization tools we distinguish: ffl Data browsers [MDT88, PBL 92, DGJS95, DAA 95, CHMW96] which rely on simple interactional metaphors such as tables and forms. ffl Visual data analysis tools, which rely on more sophisticated interactional metaphors that ....

T. Catarci, M.-F. Costabile, S. Levialdi, and C. Battini. Visual query systems for databases: a survey. Journal of Visual Languages and Computing, 8(2):215--260, June 1997.

....context of database management: schema definition, query formulation, and data visualization. Accordingly, three kinds of visual interfaces have been designed and are currently provided by most commercial DBMS: schema browsers and editors, visual query languages, and data visualization tools (see [CCLB97] for a survey) In this paper, we focus on a family of data visualization interfaces for object databases, known as object browsers [PBL 92, DAA 95, DGJS95, CHMW96] The underlying principle of such interfaces is to provide a visual representation of the data residing within objects, and ....

T. Catarci, M. Costabile, S. Levialdi, and C. Batini. Visual query systems for databases: a survey. Journal of visual languages and computing, 8(2), 1997.

....is a very important feature, especially in cases when the user has limited or even no knowledge of the schema. In Xing this is possible through the use of regular expressions as tags. However, neither VQL nor DOODLE is capable of expressing deep queries. For a survey of visual query languages, see [6]. 3 XML and Visual Languages XML is developing into a standard markup language for documents, in particular, for documents to be presented on the World Wide Web. Since XML simplifies many aspects of the more complex SGML, it can be expected to be more widely accepted and to receive vital support ....

T. Catarci, M. F. Costabile, S. Levialdi, and C. Batini. Visual Query Systems for Databases: A Survey. Journal of Visual Languages and Computing, 8:215--260, 1997.

....style this describes how the query is visualised. The different forms of visualisation that a query could use are textual, form, graph diagrammatic, iconic and multi paradigm. ffl Expressive Power this defines the types of queries that can be created with the interface. Catarci et al. [8] used and extended a previous classification by Chandra [10] known as Chandra s hierarchy. This hierarchy can be seen in Figure 22 with the extended classes of Catarci et al. [8] shown as gray hatched boxes. It was noted by Catarci et al. [8] that most visual query systems are less expressive than ....

....ffl Expressive Power this defines the types of queries that can be created with the interface. Catarci et al. [8] used and extended a previous classification by Chandra [10] known as Chandra s hierarchy. This hierarchy can be seen in Figure 22 with the extended classes of Catarci et al. [8] shown as gray hatched boxes. It was noted by Catarci et al. [8] that most visual query systems are less expressive than relation algebra, and very few are placed in the upper levels. It was also noted in [8] that it can be very hard to classify the visual query system as formal, or even precise ....

[Article contains additional citation context not shown here]

Tiziana Catarci, Maria F. Costabile, Stefano Levialdi, and Carlo Batini. Visual Query Systems for Databases: A Survey. Journal of Visual Languages and Computing, 8:215--260, 1997.

....current prototype is fully implemented as described in this paper. According to the point of view of many other authors in the field, we assume that the term visual language denotes a means of communicating with a visual system in a coherent and consistent way through visual expressions (e.g. see [2]) In our opinion, a visual query language should not be considered in isolation, but in an integrated environment providing an easy to use visual query system, offering active support and feedback, strong metaphors etc. In fact, it often becomes obvious that the usefulness of a visual language ....

T. Catarci, M.F. Costabile, S. Levialdi, and C. Batini, "Visual query systems for databases: A survey", Journal of Visual Languages and Computing, vol. 8, no. 2, pp. 215--260, Apr. 1997.

....information that is displayed in the environment Kaleidoscape, and also to execute the OQL queries that are generated from the visual queries constructed in the Kaleidoscape environment. RELATED WORK Visual query languages have attempted to bridge the gap of usability for users (for a survey see [6]) Forms based query languages such as QBE [23] present the database structure as tables or forms into which queries can be placed. Graph based query languages (e.g. Guidance [12] Gql [17] have the advantage over forms style interfaces in that they can directly represent relationships within ....

Tiziana Catarci, Maria F. Costabile, Stefano Levialdi, and Carlo Batini. Visual Query Systems for Databases: A Survey. Journal of Visual Languages and Computing, 8:215--260, 1997.

....alphabetically, collections by size, etc. The number of children axis has been scaled down as can be seen by comparison with the other axes. Figure 7 The current results environment 5 RELATED WORK Visual query languages have attempted to bridge the gap of usability for users (for a survey see (Catarci et al. 1997)) Forms based query languages such as QBE (Zloof 1977) present the database structure as tables or forms into which queries can be placed. Graph based query languages (e.g. Guidance (Haw et al. 1994) have the advantage over forms style interfaces in that they can directly represent ....

Catarci, T., Costabile, M. F., Levialdi, S. & Batini, C. (1997), `Visual Query Systems for Databases: A Survey', Journal of Visual Languages and Computing 8, 215--260.

....band may be stretched, shrunk and wrapped around in contrast to a (rigid) beam, a marble can roll around and change its position in contrast to a nail. VISCO offers several novel features that correspond to issues mentioned in a recent survey on visual query systems for databases. Catarci et al. [3] conclude this excellent survey with a list of most significant issues for the design of next generation visual query systems. VISCO s features incorporate solutions for several of these issues. Animation is an essential part of VISCO and illustrates possible variations in user sketches. ....

....query optimization. 3 Related Work VISCO can be classified as a visual query system for spatial information systems that uses sketched queries combined with deductive reasoning. A recent and complete survey on visual query systems for database systems handling conventional data can be found in [3]. Other relevant work [9, 2] reviews especially visual query system for spatial information systems. A related approach that also uses spatial relations [10] deals with symbolic descriptions and retrieval in image databases. In the following we shortly review four approaches [9, 11, 12, 2] that ....

T. Catarci, M.F. Costabile, S. Levialdi, and C. Batini, "Visual Query Systems for Databases: A Survey", Journal of Visual Languages and Computing, vol. 8, no. 2, pp. 215--260, Apr. 1997.

No context found.

Tiziana Catarci, Maria Francesca Costabile, Stefano Levialdi, and Carlo Batini, `Visual query systems for databases: A survey', Journal of Visual Languages and Computing, 8(2), 215--260, (1997).

....of the spots without getting disoriented by sudden, large changes in context. The values of other attributes of the database can also be varied by the user through appropriate widgets that allow performing dynamic queries [6] This is a very interesting visual query formulation technique (see [7] for a classification of such techniques) based on range selection, i.e. it allows a search conditioned by a given range on multi key data sets. The query is formulated through direct manipulation of graphical widgets, such as buttons, sliders, and scrollable lists, with one widget being used for ....

Catarci, T., Costabile, M. F., Levialdi, S., Batini, C. "Visual Query Systems for Databases: a Survey", Journal of Visual Languages and Computing, Vol. 8, 1997, pp. 215-260.

....tried to discourage us. Anyway, eventually he agreed to be our Ph.D. advisor and gave us the very first idea which marked our work for many years: Why not use ER diagrams as database query interface This idea is now very common and there are tens of ER based visual query system proposals (see [14] for a survey) but at that time it was quite new and we liked it very much. So we started working on a system originally called Query By Diagram (QBD) Basically we had in mind database issues such as expressive power of query languages, query evaluation, SQL, etc. At the beginning we never ....

T. Catarci, M.F. Costabile, S. Levialdi, and C. Batini. Visual query systems for databases: a survey. J. of Visual Languages and Computing, 8(2):215--260 (1997).

....spaces rapidly and with fun. 75 2.1 Information Visualization Prototypes In our work, we are particularly interested to designing visualization tools that provide users with a rapid overview of the content of an information system. Recently, many visual query systems have been developed [CCLB97]; such systems use visual representations to depict the domain of interest and express related requests. Indeed, exploring large multi attribute databases is greatly facilitated by presenting information visually. Among different visualization techniques of databases proposed in the literature, ....

....of the spots without getting disoriented by sudden, large changes in context. The values of other attributes of the database can also be varied by the user through appropriate widgets that allow to perform dynamic queries [SWA92] This is a very interesting visual query formulation technique (see [CCLB97] for a classification of such techniques) based on range selection, i.e. it allows a search conditioned by a given range on multi key data sets. The query is formulated through direct manipulation of graphical widgets, such as buttons, sliders, and scrollable lists, with one widget being used for ....

Catarci T., Costabile M. F., Levialdi S., Batini C., Visual Query Systems for Databases: a Survey, Journal of Visual Languages and Computing, Vol. 8, 1997, pp. 215-260.

....basic Graphical Primitives. This formal approach allows the user to switch from one interaction paradigm to another, always saving the query state. 1. Introduction Recently, the so called Visual Query Systems (VQSs) have acquired a prominent role as tools for providing database access (see, e.g. [6, 7]) VQSs may be defined as query systems essentially based on the use of visual representations to depict the domain of interest and express the related requests. They are oriented to a wide spectrum of users who have limited technical skills and generally ignore the inner structure of the accessed ....

....or more underlying Database Management Systems. The kernel of the system consists of the three managers that are cooperating processes. The Query Formulation Manager is capable of supporting several paradigms for visual representations, e.g. formbased, iconic, diagrammatic representations (see [7] for a precise definition of visual representation) providing for each of them a suitable representation of the internal query language operators (see [5] and allowing the user to switch among them while expressing the query. At the beginning, the Query Formulation Manager selects the visual ....

[Article contains additional citation context not shown here]

T.Catarci, M.F.Costabile, S.Levialdi and C.Batini, "Visual Query Systems for Databases: A Survey," Technical Report SI/RR-95/17, Dipartimento di Scienze dell'Informazione, Universita' di Roma "La Sapienza", 1995.

....with the huge number of autonomous and heterogeneous information sources of the Internet. For instance, there is the need of a global agreement on access protocols, procedures, and exported data schemata. Finally, several visual mechanisms have been adopted in so called visual query systems [7]. Visual representations of data schemata and instances, as well as direct manipulation query mechanisms and browsing facilities, did make the interaction with traditional databases simpler and more accessible to people without a specific preparation. Thus, they can be profitably used also in ....

....databases has been discussed extensively in the research community. Several query modalities representing alternatives to traditional query languages such as SQL, have been proposed. Most of them are based on the use of visual representations and direct manipulation interaction mechanisms (see [7]) for a survey of visual query languages, VQLs, and [31] for the definition of direct manipulation) Systems implementing VQLs are called Visual Query Systems (VQSs) They take advantage of the well known high bandwidth of the human vision channel, allowing both recognition and handling of large ....

T.Catarci, M.F.Costabile, S.Levialdi, C.Batini. "Visual Query Systems for Databases: A Survey." Journal of Visual Languages and Computing, June 1997, to appear.

....complex queries. Unfortunately, many documents on the Web are still HTML, so it is still too early to measure the adequacy of XML query languages. Finally, from the user s point of view, all these languages are too difficult to be used. SQL itself is too difficult to be used by a casual user ([19]) so very recent proposals aim at putting visual query interfaces on top of Web query languages, e.g. XML GL [23] using graphs as visual representation, and EquiX [26] based on forms. Such proposals claim to offer easy to use alternatives to textual Web query languages. Unfortunately, no ....

T. Catarci, M. Costabile, S. Levialdi, and C. Batini. Visual query systems for databases: A survey. IEEE Transactions on Knowledge and Data Engineering, 8(3), 1996.

.... of billion of links, often resulting in both user s disorientation and cognitive overhead [GB96] This browsing activity is very different from traditional database querying, where the user has just to specify which are the data s he wants to retrieve, often assisted by a friendly visual interface [CCLB97]. This paper describes the structure and the main component modules of Web At a Glance (WAG) a system offering a novel way to interact with the WWW, and overcoming the existing dichotomy between browsing and querying (see [Cat97] WAG aims at relieving the user from the hard job of searching for ....

T.Catarci, M.F.Costabile, S.Levialdi, C.Batini. "Visual Query Systems for Databases: A Survey." Journal of Visual Languages and Computing, June 1997, to appear.

....basic Graphical Primitives. This formal approach allows the user to switch from one interaction paradigm to another, always saving the query state. 1. Introduction Recently, the so called Visual Query Systems (VQSs) have acquired a prominent role as tools for providing database access (see, e.g. [8, 9]) VQSs may be defined as query systems essentially based on the use of visual representations to depict the domain of interest and express the related requests. For example, relations, as algebraically defined in the relational model, may be represented by using either hypergraphs or tables; in ....

....more underlying Database Management Systems. The kernel of the system consists of the three managers that are cooperating processes. The Query Formulation Manager is capable of supporting several paradigms for visual data representations, e.g. form based, iconic, diagrammatic representations (see [9] for a precise definition of visual representation) providing for each of them a suitable representation of the internal query language operators (see [7] and allowing the user to switch among them while expressing the query. At the beginning, the Query Formulation Manager selects the visual ....

[Article contains additional citation context not shown here]

T.Catarci, M.F.Costabile, S.Levialdi and C.Batini, "Visual Query Systems for Databases: A Survey," Technical Report SI/RR-95/17, Dipartimento di Scienze dell'Informazione, Universita' di Roma "La Sapienza", 1995.

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T. Catarci, M. Costabile, S. Levialdi, C. Batini, "Visual Query Systems for Databases: A Survey", Journal of Visual Languages and Computing, 1995

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T. Catarci, M.F. Costabile, S. Levialdi, and C.Batini. Visual query systems for databases: a survey. Journal of Visual Languages and Computing, 8:215--260, 1997.

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Tiziana Catarci, Maria Francesca Costabile, Stefano Levialdi, and Carlo Batini. Visual query systems for databases: A survey. Journal of Visual Languages and Computing, 8(2):215--260, 1997.

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T.Catarci, M.F.Costabile, S.Levialdi, C.Batini. Visual Query systems for Databases: A Survey. Journal of Visual Languages and Computing 8(2), 1997, 215-260.

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Tiziana Catarci, Maria Francesca Costabile, Stefano Levialdi, and Carlo Batini. Visual query systems for databases: A survey. Journal of Visual Languages and Computing, 8(2):215--260, 1997.

No context found.

Tiziana Catarci, Maria F. Costabile, Stefano Levialdi, and Carlo Batini. Visual query systems for databases: A survey. Technical Report SI/RR-95/17, Dipartimento di Scienze dell'Informazione, Universita' di Roma La Sapienza, 1995.

No context found.

Tiziana Catarci, Maria Francesca Costabile, Stefano Levialdi, and Carlo Batini. Visual query systems for databases: A survey. Journal of Visual Languages and Computing, 8(2):215--260, 1997.

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CATARCI, T., COSTABILE, M. F., LEVIALDI, S., AND BATINI, C. Visual query systems for databases: A survey. Journal of Visual Languages and Computing 8, 2 (1997), 215--260.

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T. Catarci, M. F. Costabile, S. Levialdi, and C.Batini. Visual query systems for databases: a survey. Journal of Visual Languages and Computing, 8(2):215--260, April 1997.

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T. Catarci, M. F. Costabile, S. Levialdi, and C.Batini. Visual query systems for databases: a survey. Journal of Visual Languages and Computing, 8(2):215--260, April 1997.

No context found.

T. Catarci, M. F. Costabile, S. Levialdi, and C. Batini. Visual query systems for databases: A survey. Journal of Visual Languages and Computing, 8(2):215--260, 1997.

No context found.

T. Catarci, M. F. Costabile, S. Levialdi, and C.Batini. Visual query systems for databases: a survey. Journal of Visual Languages and Computing, 8(2):215--260, Apr. 1997.

No context found.

T. Catarci, M. F. Costabile, S. Levialdi, and C.Batini. Visual query systems for databases: a survey. Journal of Visual Languages and Computing, 8(2):215--260, Apr. 1997.

No context found.

T. Catarci, M. Costabile, S. Levialdi, and C. Batini. Visual Query Systems for Databases: A Survey. Technical report, Dipartimento di Scienze dell'Informazione, Universita' di Roma La Sapienza, 1995.

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T. Catarci,M. Costabile,S. Lvialdi,C. Batini "Visual Query Systems for Databases: A survey", Journal of visual languages and computing, 8(2), 1997.

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T. Catarci, M. F. Costabile, S. Levialdi, and C. Batini. Visual Query Systems for Databases: A Survey. Journal of Visual Languages and Computing, 8:215--260, 1997.

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